What word is a modification of a verb,adjective,or aother adverb in the following sentence. Farrah's purse was nowhere in the room.

An adverb is simply a "qualifier" for a verb. An example might be:

I write - "write" being the verb (I write, you write, they write etc)

With an adverb:

I write swiftly
I write carefully (etc)

Largely ignored these days, the adverb should follow the verb, not the other way around

Now you as talking. Grammar, your best bet is to look into the grammar book in your language or the language you are using. Not all languages have the same order of words in their sentences. I gather that you recognise the word by their grammatical word. You know a verb from a noun. I always find adjectives and adverbs tricky.
if you recognise the different groups of words,you are ok. Just look in the grammar book to make certain.
one thing I did in the old days when learning a new language,nears too learn the grammar that differed from my native language.

An adjective describes something. Example: She drove a (red) car. Example: You asked a (lousy) question. Example: I gave a (simple) answer. The words in ( ) are adjectives. Adjectives describe objects or people, nouns. Adverbs describe actions or verbs. Example: He runs (slowly). Example: She (quickly) brushed her teeth. You can leave the adjectives and adverbs out of a sentence and the sentence will still be complete, The adjectives and adverbs just tell a little more about what you are talking about.

Article, adverb, adjective, noun, verb, adverb, adjective.

A noun is any physical or imaginary object.
A verb is anything that an object can do.
A pronoun is a special reusable "general purpose" noun used to indicate another noun.
An adjective (you missed that one) is a word that describes a noun.
An adverb is a word that describes a verb.

For example, "My red ladder folds easily - it is new".
"Ladder" is a noun, a physical object. "Folds" is a verb - it tells what the ladder can do. "My" and "red" are both adjectives; they describe the ladder (the noun). "Easily" is an adverb; it describes how the ladder folds (describes the verb). "It" is a pronoun, which is reusable because the same "it" could be used to indicate a ladder, a car, a shirt, a philosophy, an incident, nearly any noun. "is" is another verb, telling something that "it" can do (it can "be" something). "New" is another adjective, describing the ladder.

You need a NOUN.
You need a few meaningful verbs, maybe a complement or two and you have your sentences. You can also throw in a couple of adjectives or adverbs to spice up the whole.

Usually it means that the word is an adverb (modifier for verbs, adjectives or other adverbs). Adverbs are commonly made from adjectives. Note the adjective USUAL, by appending -LY to it we make it an adverb.
The word LULLY is no adverb. It is the name of a French composer (XVII century) .

We'll look at the verbs - CRY and RANG. Now look at the words that make those verbs come to life in this sentence - suddenly, spine-tingling. a night creature, these words describe the verbs. Take these word out and see how uneventful this story is. In this sentence the adjectives and the adverbs are the same.