The words homosexual, lesbian and homosexual should be removed from dictionaries simply because they cannot describe or explain the sexual nature of any human being in a correct way, and because the sexual nature of every human being is too important not to be precise about.
Because the words shouldn't excist no person looks like, sounds like, moves like or is "gay", "lesbian" or "homosexual". What people do is a matter of act and not being and it is more correct to say for example that people are friends or just live together if two people of a same gender want to live in a same apartment or house.
A soundvideo I have made about the subject can be seen/listened to here: