Windows vs trademark

Windows and trademark both are nouns.

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

Windows (noun)	trademark (noun)
(trademark) an operating system with a graphical user interface	a distinctive characteristic or attribute of someone or something
	a formally registered symbol identifying the manufacturer or distributor of a product

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