trademark vs Realtor

trademark and Realtor both are nouns.

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

trademark (noun)	Realtor (noun)
a distinctive characteristic or attribute of someone or something	a real estate agent who is a member of the National Association of Realtors
a formally registered symbol identifying the manufacturer or distributor of a product

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