फ़्लैशकार्ड

A gerund names an activity rather than describing an action that is currently unfolding. Because it functions as a noun, a gerund can serve as the subject of a clause, follow the linking verb be, or appear directly after prepositions and certain main verbs. The form always ends in -ing, but its grammatical position determines whether it is a gerund.

Carrying heavy bags of soil builds strength quickly.