A rail is a support structure, usually a length wood or metal. Rails is the plural form and can mean any number of support rails or the parallel metal beams on which a train or trolley runs. Example sentences:
Stop, look, and listen before you cross the rails.
The family sat on the porch rails for a sing along.
The only plural noun in the sentence is 'rails', the singular noun is 'rail'.The sentence using the singular noun:"The thick rail provided a place to hold onto."
(*not to be confused with the homophone verb or noun "rails") Crackles or rales heard in the lungs can indicate a serious medical condition.
how can you use the word content in noun and verb in a sentence
Yes you can it is a noun and a verb depending on how you use it
He rode the rails his whole life, and knew nothing else.
As a noun.
its a noun
The cracks in the wall were expanding, indicating a structural problem.
Motivation is used a noun in the sentence.
As a noun.
As a plural noun
As a noun for starters.