The Nuance Difference: "寝る" vs "しつれいします"

In Japanese, both 寝る and しつれいします are often translated to English but have distinct usages. 寝る (ねる (neru)) represents "to sleep, to go to bed" (Level: N5) and typically represents A fundamental daily activity verb. Polite form is 寝ます. On the other hand, しつれいします (しつれいします (shitsurei shimasu)) translates to "Excuse me; Sorry to bother you; Goodbye (when leaving someone's office/home)" (Level: N5) and is used for Literally 'I'm committing a rudeness.' Used when entering/leaving a room, interrupting someone, or asking to pass by. It's a polite apology for a potential inconvenience.. Mixing these up can sound unnatural to native Japanese speakers!