The use of cluster bombs in Iraq was proving to be extremely deadly to the American troops.
There was a cluster of stars that the astronomers were studying carefully.
You can use it as an adjective.
by adjective in the sentence
In a sentence.
NO but in the sentence "Use of the word "in" as an adjective is IN these days" the IN is an adjective
An adjective describes a noun.
There was a cluster (a lot) of balloons at my friends party, must be because she's turning 13.
'He was a worried boy.' In this sentence worried is describing the boy, therefore worried is an adjective.
no
apathetic is the adjective. His apathetic attitude annoys me!
Syria's government use the cluster bombs to annihilate the Syrian citizens
there are a group of stars that are cclose together