tag vs brandmark

tag is a noun but brandmark is not a noun.

Word	Noun	Adjective	Verb	Adverb
tag	Yes	No	Yes	No
brandmark	No	No	Yes	No

As verbs, brandmark is a hyponym of tag; that is, brandmark is a word with a more specific, narrower meaning than tag:

Other hyponyms of tag include brand, trademark, point, point, point, calibrate, code, badge, favorite, favourite.

tag (noun)	brandmark (noun)
(sports) the act of touching a player in a game (which changes their status in the game)
a game in which one child chases the others; the one who is caught becomes the next chaser
a small piece of cloth
a label written or printed on paper, cardboard, or plastic that is attached to something to indicate its owner, nature, price, etc.
a label associated with something for the purpose of identification

tag (verb)	brandmark (verb)
provide with a name or nickname	mark with a brand or trademark
attach a tag or label to
touch a player while he is holding the ball
supply (blank verse or prose) with rhymes
go after with the intent to catch