ETYM Latin synecdoche, Greek synekdoche, from to receive jointly; syn with + dechesthai to receive; ex out + dechesthai to receive.
Substituting a more inclusive term for a less inclusive one or vice versa.
Part used to refer to whole or vice versa.
Literature device of signifying thing by its part, or part by whole.
Figure of speech that uses either the part to represent the whole (“There were some new faces at the meeting”, rather than new people), or the whole to stand for the part (“The West Indies beat England at cricket”, rather than naming the national teams in question).