font cartridge vs font

font cartridge and font both are nouns.

Word	Noun	Adjective	Verb	Adverb
font cartridge	Yes	No	No	No
font	Yes	No	No	No

As nouns, font is a hypernym of font cartridge; that is, font is a word with a broader meaning than font cartridge:

font cartridge: any font that is contained in a cartridge that can be plugged into a computer printer
font: a specific size and style of type within a type family

Other hypernyms of font cartridge include case, face, fount, typeface.

font cartridge (noun)	font (noun)
any font that is contained in a cartridge that can be plugged into a computer printer	bowl for baptismal water
	a specific size and style of type within a type family