The compound "yellow-green" is a straightforward descriptive formation in Modern English, combining two primary color terms of ancient Germanic lineage. "Yellow" descends from the Proto-Germanic gelwaz, related to gold and ripe grain, while "green" comes from Proto-Germanic grōniz, associated with growing plants and vitality. The logic of the compound is purely chromatic, denoting a hue that partakes of the qualities of both constituent colors. This type of color-term compounding is a productive and transparent method in English for specifying intermediate shades, reflecting the language's analytical and descriptive capacity.

Structure: yellow (color) + green (color) - yellow: From Old English geolu, geolwe, of Germanic origin. Functions as a color adjective. - green: From Old English grēne, of Germanic origin. Functions as a color adjective.