re-enact
The root word would be "union". Reunion means to unite again or bring into union again. There has to be a previous "union" in order for there to be a reunion.
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No, it is a noun. The word effect means a result or consequence. It can rarely be used as a verb to mean cause, or bring about.
Recycle is a word that means to use again.
The word that means the act of seeing again is "review" or "revision".
review means to look again or study again!
Vibrate
The word "rewrite" has a prefix "re-" that means again.
Earnings is the word.
It means to do again and again and again.
initiate
tame