trademark vs marker

trademark and marker both are nouns.

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

As nouns, marker is a hypernym of trademark; that is, marker is a word with a broader meaning than trademark:

trademark: a formally registered symbol identifying the manufacturer or distributor of a product
marker: a distinguishing symbol

Other hypernyms of trademark include mark, marking.

trademark (noun)	marker (noun)
a distinctive characteristic or attribute of someone or something	some conspicuous object used to distinguish or mark something
a formally registered symbol identifying the manufacturer or distributor of a product	a writing implement for making a mark
	a distinguishing symbol

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