order vs request

order and request both are nouns.

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

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

Other hypernyms of order include asking.

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

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

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

order: give instructions to or direct somebody to do something with authority
request: ask (a person) to do something

order (noun)	request (noun)
the act of putting things in a sequential arrangement	the verbal act of requesting
(architecture) one of original three styles of Greek architecture distinguished by the type of column and entablature used or a style developed from the original three by the Romans	a formal message requesting something that is submitted to an authority
a degree in a continuum of size or quantity
a legally binding command or decision entered on the court record (as if issued by a court or judge)
a commercial document used to request someone to supply something in return for payment and providing specifications and quantities
a body of rules followed by an assembly
(often plural) a command given by a superior (e.g., a military or law enforcement officer) that must be obeyed
a request for something to be made, supplied, or served
logical or comprehensible arrangement of separate elements
(biology) taxonomic group containing one or more families
a formal association of people with similar interests
a group of person living under a religious rule
established customary state (especially of society)
a condition of regular or proper arrangement

order (verb)	request (verb)
bring order to or into	express the need or desire for
place in a certain order	ask (a person) to do something
assign a rank or rating to	inquire for (information)
arrange thoughts, ideas, temporal events
make a request for something
give instructions to or direct somebody to do something with authority
issue commands or orders for
bring into conformity with rules or principles or usage; impose regulations
appoint to a clerical posts