The word "inlayer" refers to someone who inserts something into something else, often for decorative or functional purposes. There are several synonyms for this word, including inserter, embedder, implanter, and interposer. Inserter is a simple alternative, describing someone who inserts something into another object or material. Embedder carries similar connotations, but can also refer to someone who implants something into a larger structure. Implanter is another synonym that specifically refers to the action of inserting or planting something into a larger object or material. Finally, interposer describes someone who inserts something between two other things, often to facilitate a transition or create a decorative effect.