piggybank

As a letter s

is the letter s with a.

As a noun piggybank is

.

As nouns the difference between terms and piggybank

is that terms is while piggybank is .

As a noun piggybank

is .

As an adjective piggyback is

on somebody's back or shoulders.

As an adverb piggyback is

on somebody's back or shoulders.

As a verb piggyback is

to attach or append something to another (usually larger) object or event.