ask vs request

ask is not a noun while request is a noun.

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

As verbs, request is a hypernym of ask; that is, request is a word with a broader meaning than ask:

Other hypernyms of ask include ask for, bespeak, call for, quest.

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

Other hyponyms of ask include solicit.

As verbs, request is a hypernym of ask; that is, request is a word with a broader meaning than ask:

Other hypernyms of ask include ask for, bespeak, call for, quest.

ask (noun)	request (noun)
	the verbal act of requesting
	a formal message requesting something that is submitted to an authority

ask (verb)	request (verb)
make a request or demand for something to somebody	express the need or desire for
direct or put; seek an answer to	ask (a person) to do something
address a question to and expect an answer from	inquire for (information)
consider obligatory; request and expect
require or ask for as a price or condition
make a date
require as useful, just, or proper