"chants" in the noun sense
a repetitive song in which as many syllables as necessary are assigned to a single tone
"chants" in the verb sense
1. chant, intone, intonate, cantillate
recite with musical intonation recite as a chant or a psalm
"The rabbi chanted a prayer"
2. tone, chant, intone
utter monotonously and repetitively and rhythmically
"The students chanted the same slogan over and over again"
Source: WordNet® (An amazing lexical database of English)
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