The word "you" belongs to the pronoun word class, particularly as a second person singular pronoun. It is used to refer to the person or people being spoken to.
Sudden is an adjective.
The scientific word for bird is "Aves."
The word "saw" can be both a verb (past tense of see) and a noun (a tool used for cutting).
preposition
Chickens belong to the class Aves, which includes all birds.
preposition
it's a preposition
Adjective
"Prime" can function as an adjective or a verb. As an adjective, it describes something of the best quality or in its best condition. As a verb, it means to prepare something for use or action.
The word "the" is a definite article and is used to specify a noun as something that is known or has been previously mentioned.
Sudden is an adjective.
It falls into the action category
The word 'history' belongs to the noun word class.
The scientific word for bird is "Aves."
Wolves belong to the class Mammalia.
Tigers belong to Class Mammalia.
Opossums belong to the class mammalia.