trademark vs Spam

trademark and Spam both are nouns.

Word	Noun	Adjective	Verb	Adverb
trademark	Yes	No	Yes	No
Spam	Yes	No	No	No

trademark (noun)	Spam (noun)
a distinctive characteristic or attribute of someone or something	a canned meat made largely from pork
a formally registered symbol identifying the manufacturer or distributor of a product

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