primary coil vs primary winding

primary coil and primary winding both are nouns.

Word	Noun	Adjective	Verb	Adverb
primary coil	Yes	No	No	No
primary winding	Yes	No	No	No

As nouns, primary coil and primary winding are synonyms defined as:

primary coil and primary winding: coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit

Other synonyms of primary coil include primary.

primary coil (noun)	primary winding (noun)
coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit	coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit