This is the 1370th most frequent Russian word.
потом
"Потом" means "then" or "afterwards" in English.
In this sentence, 'потом' is used as a conjunction meaning 'then' to indicate the sequence of actions.
Сначала мы провели собрание, потом пошли в кафе.
First, we had a meeting, then we went to a café.
Here, 'потом' is used as an adverb meaning 'later' to refer to a future point in time.
Он сказал, что придет потом, после окончания работы.
He said he would come later, after finishing work.
In this case, 'потом' is again used as an adverb to mean 'later' referring to a subsequent occasion.