You are technically incorrect (for the US, I’m not familiar with UK architectural terminology), the colloquial usage does not match industry standard terminology. The ASME definition for ‘water closet’ is specifically the fixture itself, a flush toilet. Building codes define water closets the same way. Some people incorrectly refer to a separate toilet room inside of a bathroom as a water closet, but that is not what professionals (plumbers, mechanical engineers, and architects) call it. If you reread the MN statute, you’ll note it refers to water closets and toilet rooms separately, because one is the fixture and the other is the room containing the fixture.
The term ‘lavatory’ is also frequently used incorrectly, a lavatory is just a sink, not the entire room.
Similarly, a ‘light bulb’ should actually be called a ‘lamp’. That’s what lighting companies, electricians, and people that manage electricians call them. A luminaire is a complete light fixture, a lamp screws into a luminaire (some luminaire have integral light sources) and a ‘light bulb’ is technically an A19 E26 lamp, A19 is the bulbous shape, E26 is the ‘standard’ screw base size. The Wikipedia article is titled LED lamp: https://en.wikipedia.org/wiki/LED_lamp
I don’t correct people in real life when they misuse these terms, but I’ll write up several paragraphs to defend my position online ;) I work in commercial construction management so I’m exposed to these terms frequently, I don’t expect non-industry folks to know them.
You are technically incorrect (for the US, I’m not familiar with UK architectural terminology), the colloquial usage does not match industry standard terminology. The ASME definition for ‘water closet’ is specifically the fixture itself, a flush toilet. Building codes define water closets the same way. Some people incorrectly refer to a separate toilet room inside of a bathroom as a water closet, but that is not what professionals (plumbers, mechanical engineers, and architects) call it. If you reread the MN statute, you’ll note it refers to water closets and toilet rooms separately, because one is the fixture and the other is the room containing the fixture.
The term ‘lavatory’ is also frequently used incorrectly, a lavatory is just a sink, not the entire room.
Similarly, a ‘light bulb’ should actually be called a ‘lamp’. That’s what lighting companies, electricians, and people that manage electricians call them. A luminaire is a complete light fixture, a lamp screws into a luminaire (some luminaire have integral light sources) and a ‘light bulb’ is technically an A19 E26 lamp, A19 is the bulbous shape, E26 is the ‘standard’ screw base size. The Wikipedia article is titled LED lamp: https://en.wikipedia.org/wiki/LED_lamp
I don’t correct people in real life when they misuse these terms, but I’ll write up several paragraphs to defend my position online ;) I work in commercial construction management so I’m exposed to these terms frequently, I don’t expect non-industry folks to know them.