ascertain vs find out

ascertain and find out both are verbs.

Word	Noun	Adjective	Verb	Adverb
ascertain	No	No	Yes	No
find out	No	No	Yes	No

As verbs, find out is a hypernym of ascertain; that is, find out is a word with a broader meaning than ascertain:

Other hypernyms of ascertain include discover, get a line, get wind, get word, hear, learn, pick up, see.

As verbs, ascertain and find out are synonyms defined as:

ascertain and find out: find out, learn, or determine with certainty, usually by making an inquiry or other effort

Other synonyms of ascertain include check, determine, learn, see, watch.

As verbs, ascertain and find out are synonyms defined as:

ascertain and find out: establish after a calculation, investigation, experiment, survey, or study

Other synonyms of ascertain include determine, find.

ascertain (verb)	find out (verb)
be careful or certain to do something; make certain of something	get to know or become aware of, usually accidentally
learn or discover with certainty	trap; especially in an error or in a reprehensible act
find out, learn, or determine with certainty, usually by making an inquiry or other effort	establish after a calculation, investigation, experiment, survey, or study
establish after a calculation, investigation, experiment, survey, or study	find out, learn, or determine with certainty, usually by making an inquiry or other effort