* Chance: This is a homophone (sounds the same but spelled differently) and could be used in a sentence like, "They had a chance to hear the chants."
* Plants: This is a homophone that could be used in a sentence like, "The plants swayed in the breeze, creating a rustling sound like chants."
Ultimately, the best "homonym" for "chants" will depend on the specific context and meaning you're trying to convey.