primary vs transformer

primary and transformer both are nouns.

Word	Noun	Adjective	Verb	Adverb
primary	Yes	Yes	No	No
transformer	Yes	No	No	No

primary (noun)	transformer (noun)
a preliminary election where delegates or nominees are chosen	an electrical device by which alternating current of one voltage is changed to another voltage
one of the main flight feathers projecting along the outer edge of a bird's wing
coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit
(astronomy) a celestial body (especially a star) relative to other objects in orbit around it

primary (adjective)	transformer (adjective)
of first rank or importance or value; direct and immediate rather than secondary
of or being the essential or basic part
most important element
not derived from or reducible to something else; basic