Words like timocracy (a form of government based on ambition for honor) and Timothy (honor to God) come from time, which means "honor" or "worth."

According to Etymonline, timid (easily frightened) and timorous (fearful) come from timere, which means "fear" and is of unknown origin. Are there any other sources that hint at where these words might have come from? Are the "honor" words and the "fear" words connected to some shared root word?