People like to see a home run hit over the wall. My daughter works for the post office in Salt Lake City. Rhode Island is a success although smaller than Texas. Respect must be earned, but honesty should always be our policy. People and wall are concrete nouns.
Home run is a compound noun.
Salt Lake City are compound nouns. Respect, honesty and policy abstract nouns. Compound nouns can also be concrete or abstract. Three other specific classifications for nouns are collective nouns, count nouns and mass nouns. Collective nouns name groups as team, class and choir.