No. Because is used as both an adverb and a conjunction.
yes the word direct is a noun because it is an action
The noun 'teacher' is a singular, common, concrete noun; a word for a person.It is a singular noun because it is a word for one person.It is a concrete noun because a teacher is a physical person.It is a common noun because it is a general word for any teacher of any kind.
A noun is called a naming word because a noun is a word for (what you call) a person, a place or a thing.
The word wedding is a noun. Because it is a person place or thing. It is a celebration there for it makes it a noun.
No, because a pronoun replaces a noun; the word 'pronoun' does not replace a noun, it is a noun.
No, it is an adjetive, because it describes a noun.
The word 'joy' is a noun because it is a word for a feeling of great pleasure and happiness, a word for an emotion, a word for a thing. The noun 'joy' is a singular, common, abstract noun.
The word "planet" is a noun because it is a thing. A person, place or thing is always a noun.
The word efficiency is a noun because it is a thing, a word for the ability (also a noun) to be competent and effective. The noun efficiency is also a word for a one room apartment, a thing.
The word Krishna is a proper noun because it is the name of a specific religion.
The word concert is a noun. It is a musical entertainment show.
Yes, tiger is a noun, a word for a type of cat; a word for a thing.