ask vs interrogate

ask and interrogate both are verbs.

Word	Noun	Adjective	Verb	Adverb
ask	No	No	Yes	No
interrogate	No	No	Yes	No

As verbs, interrogate is a hyponym of ask; that is, interrogate is a word with a more specific, narrower meaning than ask:

Other hyponyms of ask include pry, query, question, question, confer with, consult.

ask (verb)	interrogate (verb)
make a request or demand for something to somebody	pose a series of questions to
direct or put; seek an answer to	transmit (a signal) for setting off an appropriate response, as in telecommunication
address a question to and expect an answer from
consider obligatory; request and expect
require or ask for as a price or condition
make a date
require as useful, just, or proper