telephone call vs phone call

telephone call and phone call both are nouns.

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

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

Other synonyms of telephone call include call.

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