"groans" in the noun sense
1. groan, moan
an utterance expressing pain or disapproval
"groans" in the verb sense
1. groan, moan
indicate pain, discomfort, or displeasure
"The students groaned when the professor got out the exam booklets"
"The ancient door soughed when opened"
Source: WordNet® (An amazing lexical database of English)
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