instill vs ingrain

instill and ingrain both are verbs.

Word	Noun	Adjective	Verb	Adverb
instill	No	No	Yes	No
ingrain	No	No	Yes	No

As verbs, instill and ingrain are synonyms defined as:

Other synonyms of instill include impress.

instill (verb)	ingrain (verb)
fill, as with a certain quality	produce or try to produce a vivid impression of
produce or try to produce a vivid impression of	thoroughly work in
teach and impress by frequent repetitions or admonitions
enter drop by drop
impart gradually