phone call vs telephone call

phone call and telephone call both are nouns.

Word	Noun	Adjective	Verb	Adverb
phone call	Yes	No	No	No
telephone call	Yes	No	No	No

As nouns, phone call and telephone call are synonyms defined as:

Other synonyms of phone call include call.

phone call (noun)	telephone call (noun)
a method of contacting a person by phone	a method of contacting a person by phone