Big is a predicate adjective. Any word on the other side of the word is or its equivalent when the word is does not happen to be used as a helping verb is either a predicate nominative (noun) or adjective. Jane is a girl. Girl is a noun. Jane is pretty. Pretty is an adjective. (That is one quick way to tell if a word is an adjective!
Balloon is a noun. In the sentence provided, balloon is a noun that serves as a direct object.
"Big" can be used as an adjective.
Donald Trump's jingoism is a big turn-off.
I delivered an impromptu speech in front of a very big crowd.
The word 'sliding' is the present participle, present tense of the verb 'to slide'. The present participle of the verb is also an adjective and a gerund, a verbal noun. Examples:Verb: The kids were sliding in the mud making a big mess of themselves.Adjective: Their fees are applied on a sliding scaleaccording to income.Noun: It wasn't exactly skating, it was more like sliding.
In the above sentence, "run" is the object of the preposition. It is part of the prepositional phrase "for a run."
So is an adverb in that sentence. It's modifying big, an adjective.
Biggest is an adjective. It's the superlative form of big.
Adjective
Balloon is a noun. In the sentence provided, balloon is a noun that serves as a direct object.
Big is an adjective, which is a word that modifies a noun or pronoun by "describing, identifying, or quantifying."Example:That is a big dog! (Big describes the noun dog.)
"Big" can be used as an adjective.
It is a great day to sled!The bad part about having a big furry dog is when you have to wash it.
arazonia is a big part in the deserts wide open range or plateau
In my neighbourhood a big mansion is visible behind all the small houses. Mansion (definition): Villa, big house
Donald Trump's jingoism is a big turn-off.
It is an adjective, as you can see variety means big.