I don't think there is any such word.
there is not one
Yes.
The homophone for the word reign is rein. "Reign" refers to a period of rule by a monarch, while "rein" refers to the straps used to control a horse.
Rule, power, sway, control, influence. Btw, I believe you mean synonym. Homophone in a word that's spelled the same or similar, but means something different. Synonym means the same thing, but is a whole different word. There is no actual homophone for authority.
The answer is that there is no homophone for can, but can is a homonym.
Him is the homophone for hymn.
Your is a homophone of you're. In some dialects, yore is another homophone.
the homophone for stationery is stationary
The homophone is dense.
The homophone is cell.
The homophone is ail.
there is no homophone for length