demand vs request

demand and request both are nouns.

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

As nouns, request is a hypernym of demand; that is, request is a word with a broader meaning than demand:

demand: an urgent or peremptory request
request: a formal message requesting something that is submitted to an authority

Other hypernyms of demand include petition, postulation.

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

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

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

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

demand (noun)	request (noun)
the act of demanding	the verbal act of requesting
required activity	a formal message requesting something that is submitted to an authority
an urgent or peremptory request
the ability and desire to purchase goods and services
a condition requiring relief

demand (verb)	request (verb)
request urgently and forcefully	express the need or desire for
claim as due or just	ask (a person) to do something
summon to court	inquire for (information)
ask to be informed of
lay legal claim to
require as useful, just, or proper