The game is Codenames (2015, Vlaada Chvátil, CGE).
The Spymaster gives a one-word clue + number (e.g., "OCEAN 3") to guide their team to multiple words on the grid. They cannot say:
Also forbidden: any form/derivative of the above (e.g., "oceanic" for "ocean"), translations, rhymes (house rule), or compound words containing them.
Forces lateral thinking—connect concepts associatively rather than literally. "OCEAN 3" for {WHALE, SHARK, SUBMARINE} instead of "WATER 3."
Codenames is the modern classic for this mechanic. 2–8+ players, 15 min, high replayability.