"nods" in the noun sense
a sign of assent or salutation or command
the act of nodding the head
"nods" in the verb sense
express or signify by nodding
"He nodded his approval"
lower and raise the head, as to indicate assent or agreement or confirmation
"The teacher nodded when the student gave the right answer"
let the head fall forward through drowsiness
"The old man was nodding in his chair"
sway gently back and forth, as in a nodding motion
"the flowers were nodding in the breeze"
be almost asleep
"The old man sat nodding by the fireplace"
Source: WordNet® (An amazing lexical database of English)
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