Especially is an adjective, as it is describing the noun bright.
It is an adverb. The adjective is simply bright.
no
adverb. it doesn't modify a noun or a pronoun
No, it is not. It is the adverb form of the adjective vivid (bright, clear).
The adjective bright has the adverb form brightly. The sun is bright. The sun shines brightly.
It can be, rarely, where it substitutes for the adverb form "brightly." "Fire, fire, burning bright..."
The word "bright" can function as an adjective, describing something full of light or vivid in color, or as an adverb, as in "shine bright."
No. Bright is an adjective or an adverb. It cannot be a preposition.
The word there is usually an adverb, referring to a location. It can be used as an adjective, especially in idiomatic phrases (all there, over there).
No, it is an adverb. It is based on the adjective special. (The word especial is practically archaic.)
The usual adverb form is brightly. Rarely, bright itself is used as an adverb (The fire burning bright).Reflecting this, the comparative and superlative forms are sometimes the same as the adjective: brighter (more brightly) or brightest (most brightly).
"Very" is the only adverb in that sentence. It is modifying the adjective "bright".