A specific ending on a noun that determines its sentence role

• Case
• Pronoun
• Number
• Predicate Nominative
• Nominative

the function of a noun in a sentence (subject, DO, etc)

• Sentence Role
• Conjunction
• Subject
• Second Person
• Case

A group of nouns that use the same endings is called a (a)   ; a group of verbs that use the same endings is called a ​ (b)  

• declension
• conjugation

The subject is "I" or "we"

• First Person
• Declension
• Sentence Role
• Direct Object
• Number

The subject is "you"

• Second Person
• Number
• adjective
• First Person
• OOP

The subject is "he," "she," "it" or "they"

• Third Person
• First Person
• Second Person
• Sentence Role
• preposition

case used for subjects and predicate nominatives

• Nominative
• Case
• Accusative
• Pronoun
• Predicate Nominative

case used for direct objects and OOPs

• Accusative
• Nominative
• Pronoun
• Number
• noun

The noun performing the verb, the "doer" of the sentence

• Subject
• OOP
• Direct Object
• verb
• Second Person

The noun the verb happens to, the "receiver" of the sentence

• Direct Object
• Accusative
• preposition
• Subject
• Conjunction