illustrate vs dilate

illustrate and dilate both are verbs.

Word	Noun	Adjective	Verb	Adverb
illustrate	No	No	Yes	No
dilate	No	No	Yes	No

As verbs, dilate is a hypernym of illustrate; that is, dilate is a word with a broader meaning than illustrate:

illustrate: clarify by giving an example of
dilate: add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing

Other hypernyms of illustrate include elaborate, enlarge, expand, expatiate, exposit, expound, flesh out, lucubrate.

illustrate (verb)	dilate (verb)
clarify by giving an example of	become wider
depict with an illustration	add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
supply with illustrations