Snow in this sentence is the verb.
Verb
Snow is a noun in that example.
A noun is a part of speech that can represent a person, place, thing, animal, or idea. A noun functions as the subjector a sentence or clause, or theobject of a verb or a preposition.
Photosynthesis is a noun.
Miracle is a noun.
Factual is an adjective.
Park is a noun in that sentence.
"snow" is a verb.
Tomorrow is adverb. Example: I have to go to school tomorrow. In this sentence, you are modifying the verb go (going when? -- tomorrow). Tomorrow can be a noun, as well. Example: Tomorrow should be warmer.
The subject!
In the sentence "tomorrow is a mystery," 'tomorrow' is a noun functioning as the subject of the sentence.
Dog
Dangerous is an adjective.
In this sentence, "cynical" is an adjective modifying the pronoun "she." It describes her attitude or behavior.
To is a preposition in that example.
Adverb
Snow is a noun in that example.
noun