class fellow vs schoolfellow

class fellow and schoolfellow both are nouns.

Word	Noun	Adjective	Verb	Adverb
class fellow	Yes	No	No	No
schoolfellow	Yes	No	No	No

As nouns, class fellow and schoolfellow are synonyms defined as:

class fellow and schoolfellow: an acquaintance that you go to school with

Other synonyms of class fellow include classmate, schoolmate.

class fellow (noun)	schoolfellow (noun)
an acquaintance that you go to school with	an acquaintance that you go to school with