What is rebracketing in linguistics? (18)(Finnish)

Here are some examples that show how rebracketing can influence not just the forms of words but their meanings and even how new words are created in a language.

In Finnish:

Kaamos:

Original form: “kaam” (dark) + “os” (time/period)

Rebracketed form: Became “kaamos,” referring to the polar night period.

Kotimaan:

Original form: “koti” (home) + “maan” (land)

Rebracketed form: Became “kotimaan,” meaning “homeland” in a single word form.

Rebracketing is a widespread linguistic phenomenon that can significantly influence the evolution of languages across different cultures.