complete; whole; totally; entirely
完 · 7 strokes
Phonosemantic compound. 宀 represents the meaning and 元 represents the sound. The 宀 component is used because putting on a roof completes the process of constructing a building.
全 · 6 strokes
Depicts jade (玉) that is entirely pure and flawless. Based on the original meaning "pure jade". The meaning later shifted to "complete" and "entire".