"Early" is an adverb when it modifies a verb, indicating the timing of an action, such as in the sentence "She arrived early." It can also function as an adjective when describing a noun, as in "the early train." In both cases, its meaning relates to timing, but its grammatical role differs depending on its usage in a sentence.
The word "early" is an adverb, which may also be used as an adjective (e.g. early breakfast). There was a now-obsolete adverb, earlily.
Adverb
Yes the word "early" can be both an adjective and an adverb.
outside
Yes it can be an adverb and adjective.
It can be either. Or also a preposition, or a noun. outside chance, outside wall - adjective stepped outside - adverb outside the lines - preposition the outside of the cup - noun
Adverbs
Yes, here's an example:The runner started early.
Early
The adverb in the sentence is outside which modifies the verb 'worked'.
Yes, it can be an adverb, or an adjective when used with a noun. The farmer wakes up early. (adverb, modifies wakes) The doctor has an early appointment. (adjective, modifies appointment)
outside