Plural is a form of the noun that shows that there are more than one . Resolution varies , for example the Penn-Treebank tagset ( ~ 36 tags ) has two tags : NNS - noun , plural , and NPS - Proper noun , plural , while the CLAWS 7 tagset ( ~ 149 tags ) uses six : NN2 - plural common noun , NNL2 - plural locative noun , NNO2 - numeral noun , plural , NNT2 - temporal noun , plural , NNU2 - plural unit of measurement , NP2 - plural proper noun .