cockscomb
Synonym discussion
Sense: noun/1
For noun/1, 'cockscomb' is a specific word for the fleshy red part on top of a rooster's head. 'Comb' is the usual everyday term for the same part, so it is broader and much more common. 'Crest' is even wider, because it can describe hair, feathers, or a raised top on many animals and objects. 'Wattle' is different again: it names the loose skin that hangs below a bird's beak, not the upright red part above it. In a farm description, you might say 'The rooster's comb was bright red.' In a more exact animal note, 'cockscomb' highlights the same part with a more technical or literary tone.
Etymology
This word joins 'cock', an older word for a rooster, with 'comb'. It first named the red crest on the bird's head because that part looks like a comb standing upright. Later, the same image was used for the flower whose folded blooms resemble a rooster's crest.