What is the difference between human and animals? so everyone may say brain, ok accepted but what difference their brain have? you likely would say that we are very intelligent and our brain are too smart! but scientists have found that chimpanzees are really smart as well. they can find the way in a maze very fast even faster than us, furthermore, they may find better way than a human!! so why they are animal and we are human?
you may say we can speak but they can't. but scientists could learn some chimpanzees many words and they could understand what the scientists tell them as well as reading something from a paper!!!
yes they can. but the big difference is that we can schedule for the future and devise a plan to achieve our aim even we reach them say, 10 years later, but chimpanzees can do it for only for 2 or 3 weeks...
so hope to the future and trying to achieve our aim within years is the main issue of distinction between human and animals
I want to say that, if someone has no aim in his/her life he/she is really squandering the time and life
and about language, yes, however, they can comprehend many words but the range of words they can learn is really small, maybe 300 words!!!
but our brain specialized to process words and understand them and each word will be stored in a particular area of the brain which differs from person to person. our brain can do a really complicated process on language.
so try to speak well and talk in a good manner ;)