Roles of nouns

Nouns can perform a variety of roles such as:
A)  Subject of a verb

My husband uses the bike every day.
The LCD screen does not display the different features.

B)  Object of a verb

I want a bike.
My husband uses the bike every day.

C)  Modifier of a verb

It feels cold this morning.
I will leave tomorrow.
He jogs today.

D)  Modifier of a noun

I bought an exercise bike from your store.
I love apple juice.