Subject is the person that do work on an object .
For example:
He is writing an essay.
In this "He" is subject , "writing" verb and "essay" is an object.
subject
All subjects are part of speech for they are all nouns.
A verb.
I dont have a clue
subject
A verb.
Sky is a noun. It can be use as a subject.
Jdiejdiicr
The subject!
Patiently is an adverb, its not an object, or subject pronoun, it's an ADVERB.
noun
the subject