techie vs technician

techie and technician both are nouns.

Word	Noun	Adjective	Verb	Adverb
techie	Yes	No	No	No
technician	Yes	No	No	No

As nouns, technician is a hypernym of techie; that is, technician is a word with a broader meaning than techie:

techie: a technician who is highly proficient and enthusiastic about some technical field (especially computing)
technician: someone whose occupation involves training in a specific technical process

techie (noun)	technician (noun)
a technician who is highly proficient and enthusiastic about some technical field (especially computing)	someone whose occupation involves training in a specific technical process
	someone known for high skill in some intellectual or artistic technique