Распределите существительные по категориям задания внизу

Proper nouns:

America, Monday, Cape Town, Mary, January.

Common nouns:

Pen, paper, chair, house, phone, book, bird.

Collective nouns:

family, team, crowd, group, class.

Abstract nouns:

Love, crying, flying, air, hate, singing, peace.

Concrete nouns:

Key, cup.

Gerunds:

Swimming, singing, running.

А про Concrete and Common существительных я плохо уверенна, путаю их постояноо.