How would you describe the difference between gerunds and verbs in a continuous tense to an inquisitive student?

a.
gerunds form the subject of a sentence while continuous verbs form the predicate.

b.
gerunds can take a plural form while continuous verbs cannot.

c.
gerunds look like continuous verbs, but they function as nouns.

d.
“gerund” is the grammatical term for a verb that ends in -ing.