No. It is a verb or a noun. The noun may be used as a noun adjunct (like an adjective), e.g. "park ranger" or park bench.
Yes
Adverb
No, park can be used as a noun and a verb.Noun: We went to the park today.Verb: We could not park the car.
Underground is an adverb, as in beneath the surface of the ground. It is an adjective, as in an underground car park
Yes, it can. In is an adverb in the sentence "I will go in" although where the person goes "in" (into) is not defined. With an object noun, in is a preposition, and a phrase could be an adverb or an adjective phrase. E.g. I went in the park. The fountain in the park is broken.
adverb
Adverb
An adverb is a word that modifies a verb, an adjective, or another adverb.An adverb modifies as how?, in what way?, when?, where?, and to what extent?.There are many words that serve as adverbs.Examples:We often walk in the park. (the adverb often modifies the verb 'walk')We very often walk in the park. (the adverb very modifies the adverb 'often')We often walk in a very beautiful park. (the adverb very modifies the adjective 'beautiful')A pronoun is a word that takes the place of a noun in a sentence.An interrogative pronoun is a word that introduces a question, a word that usually takes the place of the noun that is the answer to the question.The interrogative pronouns are: who, whom, whose, what, which.Example: Who is your new supervisor? They assigned me to Mr. Lincoln.For more information on adverbs and interrogative pronouns, see the links below.
The infinitive phrase plays the role of an adverb in this sentence. It tells why you met at the park. In the sentence "You met at the park to run", "to run" is the infinitive phrase.
I'm about 90% certain it is an adverb. About can serve as an adverb, preposition or adjective. I'm 99.9999999999999% certain it isn't an adjective as used here, but preposition or adverb depends on whether there is anything more to the sentence: He wandered about (aimlessly) => about is an adverb He wandered about the park => about is a preposition
No, legally is an adverb, a word that modifies a verb. Example sentence:You can't legally park on this street.
The restaurant had its menu standing outside.I've looked everywhere for my keys.The apartment has a park nearby.
It is an adjective, describing the noun "side."