A Sentence generally has a Subject and Object. For subject and Obect a word must be a Nound or a Pronoun. A continuous form of verb used as a noun is called a Gerund and used as an adjective is called a Present Participle forexample
Walking on this road is not safe.
Here walking is a verb in continuous form but used as a Noun. It is a Gerund.
I saw him walking in the street.
Walking here qualifies him and is an adjective. It is a Present Participle.
