This is the 4798th most frequent Russian word.
звучат
"Звучат" means "sound" or "resonate" (third-person plural form).
'Звучат' is used metaphorically here to express how the ideas seem when presented.
Идеи, которые они предложили, звучат многообещающе.
The ideas they suggested sound promising.
Here, 'звучат' refers to how words sound, indicating their auditory impression.
Эти слова звучат необычно.
These words sound unusual.
In this sentence, 'звучат' describes the produced sound of musical instruments.