querier vs questioner

querier and questioner both are nouns.

Word	Noun	Adjective	Verb	Adverb
querier	Yes	No	No	No
questioner	Yes	No	No	No

As nouns, querier and questioner are synonyms defined as:

Other synonyms of querier include asker, enquirer, inquirer.

querier (noun)	questioner (noun)
someone who asks a question	someone who asks a question