A Word Used as a Substitute for a Related Entity
This page is the CodyCross answer for the clue below from Fauna and Flora, Group 167, Puzzle 5 (Commensalism).
Question is: A Word Used as a Substitute for a Related Entity
and the answer is: METONYM
Word Meaning:
METONYM — (grammar) A word that names an object from a single characteristic of it or of a closely related object; a word used in metonymy.
Definitions from Wiktionary.