Determine whether the underlined noun is concrete or abstract. cooperation was necessary in order for the two countries to finalize a peace agreement.

a. concrete

b. abstract

It would be an abstract noun because you can't use your five senses but concrete you can. An example of an abstract noun is love, hate, freedom, power and safety. An example of a concrete noun is flower, bear, music, and tornado. Again the answer would be B) Abstract noun.