I have looked up many hogwarts house trait descriptions and have tried to sum it up in my own words. So here goes...
HUFFLEPUFF!
Hufflepuff traits: Loyalty, dedication, hardworking, fair play and patience.
Hufflepuffs are frequently looked at as the leftover house, and where this is sort of true as if you do not fit into any of the others Hufflepuff will take you, it doesn't mean that you are not important. A lot of people would not even be able to get into this house because they do not value hard work or fair play as a decent person should.
This house is seen as the nicest and more accepting house. You will always feel welcome if you're in this house and never will you be left out. Once a Hufflepuffs ties have been made then there is very little that could break it apart. Once you have made a friends in Hufflepuff you have made a friends for life as they are not fickle.
Hufflepuffs are seen as a steady, mellow house that are very accepting of everyone. They are not deceitful but nature meaning that if they say something is true then it is - they rarely lie. .
Hufflepuffs, however, can be seen as cowardly as they are not very confrontational. They may be extroverted and friendly but if challenged will back down and submit. But if a Hufflepuff is in a crowd of people the will stick out there opinion till the end so to back up their comrades. But they do not like being in the limelight and so tend to follow trends instead of creating new ones.
Hufflepuffs understand that if you work hard then you will get further and so this means that if they set their minds to doing something they will stay with it.
Hufflepuffs have more of a tolerance of different people and so are most patient when dealing with people with different views. This patience also applies in their work as they are willing to put in a lot of hours to accomplish something where as other would give up after one.
SLYTHERIN!
Slytherin traits: Traditionalism, Resourcefulness, cunning, ambition, leadership qualities, self-Preservation, Shrewdness, Determination, certain disregard for the runs and intelligence.
Slytherin house is known for producing bad wizards but that doesn't mean that if you are accepted into this house you will be inherently evil - Ambition is NOT evil, nor is cunning. Ambition is what gives people drive, which is essential to advancement.
Slytherins are willing to play for the other team once in a while if it benefits them. They are not coy about doing what they need to do to achieve their goals, but sometimes their ambition can get them so caught up that the do not realize what they're doing can hurt people. They might often break rules and manipulate people to get what they need to done.
Slytherins are very good about getting things done because they have the drive to do so and the resourcefulness to be able to complete a difficult task. This is why they are considered good leaders.
They can be more open minded about certain things but then if it interferes with your day to day lives you wouldn't hesitate to reject it. They can be judgmental towards unfamiliar things, which is why they tend to stick with groups they know.
Slytherins tend to hesitate before acting, so as to weigh all possible outcomes before deciding exactly what should be done. You are scared that you will embarrass yourself and so can frequently be on defense when talking to someone, or even the offensive so to prevent people from mocking you.
They tend to deal with their problems on their own rather than expressing their emotions outwardly unless provoked. They are more distrustful than most and can often be viewed as cold.
GRYFFINDOR
Gryffindor traits: bravery, stubbornness, rash, daring, out-going, generious, adventureious, charm and chivalry.
Gryffindors are the 'ideal' house who will put others before themselves and go beyond the call of duty when need be. The are seen as very brave in the face of danger but sometimes they can go over the top or make desistions to rashly causing unneeded conflict.
They are seen to be very charming and out going towards a range of people but can be very closed minded to those they think are 'wrong'. If you don't follow there regeim they could be quite cold and even mean to you. If you get into an argument with a Gryffindor they are less likely to back down.
But they are seen as generous to those who arent as socailly adept to them. If they see someone in the corner of a room, not getting involved, the are likely to help them along by making introductions. This means that they can be good leaders as they are aware of the people around them and give off a warm, inviting atmosphere. Gryffindors tend to be more trusting of people.
Gryffindors are seen as quite proud of who they are and so if someone critises there honour they are likely to pick a fight. They stick up for what they believe in without even slight waver but this can mean that the bigger picture can be lost to them.
Gryffindors can often have a certain disreguard for the rules and do what they think is 'right' dam the consequences. The might often seek out adventure and are really seen to live life to the full. Gryffindors tend to live in the 'now' and don't worry about the 'later'.
Gryffindors in general love being the centre if attention and will often seek it out. They are very socailly adapt but can also be very in-you-face.
RAVENCLAW
Ravenclaw traits: Cleverness, wit, intelligance, individuality and creativity.
Ravenclaws are the most open minded of the houses. They like to be in smaller gatherings of people with the same ability and don't like large gathering. They are the most introverted house as well and this means that they can be looked upon as shy.
They can seem very self obsessed at times but only because they have such an inquisitive mind that means that once they have started on a project they won't give up until its done.
Ravenclaws are ambitious but not for personal gain but for the sake to wanting to know more about the world. The care little for the material aspects of life and prefer to turn to deeper matters.
There open-mindedness means that they excel easier in areas of learning because they don't have stubborn beliefs or principles that can hold one back from understanding new information's.
On the other hand Ravenclaws can find social situations very difficult and can be considered rude when they do not respond to something in specific way e.g. laugh at a joke. They can be disconnected from the rest of humanity even though they tend to have a deeper understanding of it then most.The frequently think outside the box but then this could mean that people don't understand them.
They are good at giving advice, have strong empathy and are avid researchers but if taken out of their comfort zone of books and logic then they can get a bit lost.
.....So I hope this gives you an insight to the Hogwarts houses! You might not agree with some of these and that fair enough but, in all, this is how I see them!