There is no one.
"Substitute" and "switch" are synonyms as they both refer to replacing something with another. However, they are not homophones which are words that sound the same but have different meanings. An antonym of "substitute" could be "original" or "primary" as they denote opposing ideas.
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
"Substitute" and "switch" are synonyms as they both refer to replacing something with another. However, they are not homophones which are words that sound the same but have different meanings. An antonym of "substitute" could be "original" or "primary" as they denote opposing ideas.
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 ail.
The homophone is cell.
The homophone is taught.
stock homophone
The homophone for climate is clime.
The homophone is style