This is the 373rd most frequent Vietnamese word.
chậm
"Chậm" means "slow" in English.
In this sentence, 'chậm' is used as an adjective to describe the slow pace of walking.
Anh ấy đi chậm hơn tôi.
He walks slower than me.
Here, 'chậm' acts as an adverb modifying the verb 'nói' (to speak), describing how the action is performed.
Học sinh cần nói chậm để giáo viên dễ hiểu.
The student needs to speak slowly so that the teacher can understand easily.
In this context, 'chậm' functions as an adjective describing the slow nature of movement due to traffic conditions.