query vs enquiry

query and enquiry both are nouns.

Word	Noun	Adjective	Verb	Adverb
query	Yes	No	Yes	No
enquiry	Yes	No	No	No

As nouns, query and enquiry are synonyms defined as:

Other synonyms of query include inquiry, interrogation, question.

query (noun)	enquiry (noun)
an instance of questioning	a systematic investigation of a matter of public interest
	a search for knowledge
	an instance of questioning

query (verb)	enquiry (verb)
pose a question