Let's say we're talking about a song in C, and at some point in that particular song, we happen to be playing an E minor chord. In this case, Em is known as the iii chord in the key C major, because it's built on the 3rd degree of the C major scale.
What if we want to talk about the note G inside that Em chord? It's the 3rd note if we count up the (Phrygian) chord scale from E, but is there a known term, like "degree", that would help us refer to G, the third note in the chord-scale without confusing it with the third degree of the key-scale?
I think maybe I've heard "aspect" used to distinguish from "degree", but can anyone confirm this, or tell me what's most commonly said? Thanks very much.