inserts
in-serts
noun
Separate items placed within a larger publication or product.
"The magazine included several advertising inserts."
verb
To place or fit something into something else, often a slot.
"She inserts the coin into the machine."
Thesaurus
Synonyms: introduce, infix, enter, cut-in, inset, sneak in, slip in, stick in, tuck, inclose, put in, enclose