To determine whether you are dealing with a gerund, use the "drug test."
Replace the word(s) with the word "drugs."
A gerund is a noun made from a verb by adding "-ing." The gerund form of the verb "read" is "reading." You can use a gerund as the subject, the complement, or the object of a sentence.
participle
a word formed from a verb (e.g., going, gone, being, been ) and used as an adjective (e.g., working woman, burned toast ) or a noun (e.g., good breeding ). In English, participles are also used to make compound verb forms (e.g., is going, has been )