The word 'kind' is both an adjective and a noun. The noun kind, a singular, common, abstract noun is a word for a group of individuals or instances sharing common traits; a ca â¦ tegory.The noun forms for the adjective kind are kindness and kindliness.he noun kind, a singular, common, abstract noun is a word for a group of individuals or instances sharing common traits; a ca â¦ tegory. The noun forms for the adjective kind are kindness and kindliness.