Last rites and Rite

Last rites noun - Rites performed in connection with a death or burial.

Rite and last rites are semantically related. In some cases you can use "Rite" instead a noun phrase "Last rites".

Rite noun - An oft-repeated action or series of actions performed in accordance with tradition or a set of rules.

Last rites and rite are semantically related. Sometimes you can replace phrase "Last rites" with "Rite", this terms are similar.