gambit vs tactical maneuver

gambit and tactical maneuver both are nouns.

Word	Noun	Adjective	Verb	Adverb
gambit	Yes	No	No	No
tactical maneuver	Yes	No	No	No

As nouns, tactical maneuver is a hypernym of gambit; that is, tactical maneuver is a word with a broader meaning than gambit:

Other hypernyms of gambit include maneuver, manoeuvre, tactical manoeuvre.

gambit (noun)	tactical maneuver (noun)
a chess move early in the game in which the player sacrifices minor pieces in order to obtain an advantageous position	a move made to gain a tactical end
a maneuver in a game or conversation
an opening remark intended to secure an advantage for the speaker