Our thought life is a function of our vocabulary. Think about that ... assuming you are able.
Anthropologist and author Christopher Hallpike has observed that it is remarkably difficult, perhaps impossible, to communicate effectively or even think lucidly about something for which one’s language has no words. Societies do not generally have words for concepts they don’t use, items they have never seen or beliefs they haven’t developed.
A higher vocabulary generally reflects higher intelligence, and a shriveled vocabulary limits one’s ability to think and understand beyond the most basic level.