Yes, "turn" is a homophone. It sounds the same as "tern," which is a type of seabird.
A homophone for "tern" is "turn".
'Leaf" in those senses is a homograph, not a homophone.
The homophone for "return" is "re-turn," which sounds the same but is spelled differently and has a different meaning.
The answer is that there is no homophone for can, but can is a homonym.
The homophone for "mine" is "mind." They sound the same but have different meanings: "mine" is used to indicate possession, while "mind" refers to the faculty of consciousness and thought.
The homophone for "farther" is "father." They are pronounced the same but have different meanings.
The homophone for "hymn" is "him."
the homophone for stationery is stationary
Your is a homophone of you're. In some dialects, yore is another homophone.
The homophone for "to" is "too" or "two".
The homophone for "meant" is "mint".