In our culture the way most of us communicate is through words. Yes we have non-verbal communication and “body language” but for the most part we neurotypical folks converse using words. What words we employ can intentionally and/or unintentionally hurt others.
I have just been introduced to a great resource of vocabulary and which introduces (or reminds us) of respectful and inclusive words to use when talk of or with people with disabilities. This resource is on the website of PHAME here in Portland OR. PHAME is an organization that serves a population of artists (visual and performing) who are differently-abled. Their Glossary of Terms is a great read and I commend it to you.