enquirer vs inquirer

enquirer and inquirer both are nouns.

Word	Noun	Adjective	Verb	Adverb
enquirer	Yes	No	No	No
inquirer	Yes	No	No	No

As nouns, enquirer and inquirer are synonyms defined as:

Other synonyms of enquirer include asker, querier, questioner.

enquirer (noun)	inquirer (noun)
someone who asks a question	someone who asks a question