model
model
model
CNS is an acronym for Central Nervous System, thus they are the same thing.
Genuine is not a noun. It has no plural. It must describe something else, and that thing can be pluralized.
A noun is a person place or thing. A proper noun is a specific person place or thing. Example: cat (noun) fluffy (proper noun)
model
model
model
model
model
model
model
model
model
model
model
model