The main difference between finite and non finite verbs is that finite verbs act as the main verb whereas non finite verbs or verbals don't act as a verb in a sentence.since finite verbs act as the main verb of a sentence,they indicate person, number, and tense.non finite verbs do not indicate person, number, and tense and they do not indicate any infections.

Finite verbs:
A finite verb is a verb that is used to express a complete action or state and shows agreement with the subject in terms of tense, number, and person. It is the main verb in a sentence and carries the meaning of the sentence. Finite verbs can change their forms to indicate different tenses, persons, and numbers.

Examples:
- She plays the piano.
- They are going to the park.
- He will eat dinner later.

Characteristics of finite verbs:
- They indicate tense, number, and person.
- They can be inflected or changed to match the subject.
- They can stand alone as the main verb in a sentence.
- They carry the meaning of the sentence.

Non-finite verbs:
A non-finite verb is a verb form that does not show tense, number, or person agreement with the subject. Non-finite verbs are not the main verbs in a sentence and cannot stand alone as complete predicates. They do not carry the primary meaning of the sentence but rather serve a grammatical function. Non-finite verbs are often used as verb forms in clauses, phrases, or verbals.

Types of non-finite verbs:
1. Infinitives: Infinitives are the base form of a verb preceded by the particle "to." They are often used to express purpose, intention, or action.
- Example: She wants to sing in the choir.

2. Gerunds: Gerunds are verb forms that end in "-ing" and function as nouns in a sentence. They can be used as subjects, objects, or complements.
- Example: Swimming is her favorite activity.

3. Participles: Participles are verb forms that can function as adjectives. They can be present participles ending in "-ing" or past participles ending in "-ed" or irregular forms.
- Example: The broken vase needs to be replaced.

Key differences between finite and non-finite verbs:
1. Agreement: Finite verbs show agreement with the subject in terms of tense, number, and person, while non-finite verbs do not.
2. Stand-alone: Finite verbs can stand alone as the main verb in a sentence, whereas non-finite verbs cannot and require another verb form to complete the predicate.
3. Meaning: Finite verbs carry the primary meaning of the sentence, while non-finite verbs serve a grammatical function or modify other words.
4. Inflection: Finite verbs can be inflected or changed to match the subject, while non-finite verbs do not inflect for tense, number, or person.
5. Forms: Non-finite verbs have specific forms such as infinitives, gerunds, and participles, while finite verbs can have various forms to indicate different tenses, persons, and numbers.