automobile
When you use the word "automobile" to refer to a category of transport vehicles, you are using this word as a noun.
The automobile has good acceleration
I am not writing a sentence using that word.
An automobile is colloquially known as a "car".
a sentence using the word endotracheal
This is a sentence using the word aviator.
this is a sentence using the word armchair.
I am saying a sentence using the word collagen.
My dilapidated automobile is lovingly called a 'junker'.
Automobile is a noun. Nouns indicate person, place, or thing.
Another name for a car is automobile. The Automobile Association in the UK is a rescue service for broken down cars.
The baker makes cakes. Automobile companies produce vehicles in several different makes and models.