Пожалуйста, подпишитесь части речи в предложении

However, during the periods when people have less to spend many firms face hard times as theur sales fall.

Придумайте свои предложения со словом fall в значении существительного и глагола

Вторую часть знаю. When you fall, and get a scratch, wash it with clean water and cover it with a band-aid. Soon fall came, the leaves started to fall, and the winds became colder.