trademark vs Phillips screw

trademark and Phillips screw both are nouns.

Word	Noun	Adjective	Verb	Adverb
trademark	Yes	No	Yes	No
Phillips screw	Yes	No	No	No

trademark (noun)	Phillips screw (noun)
a distinctive characteristic or attribute of someone or something	a screw with a special head having crossed slots
a formally registered symbol identifying the manufacturer or distributor of a product

trademark (verb)	Phillips screw (verb)
register the trademark of
mark with a brand or trademark