Definition:Finite verbs (sometimes called main verbs) are verb forms suitable for use in predicates in that they carry inflections or other formal characteristics limiting their number(singular / plural), person, and tense(past / present etc). Finite verbs can function on their own as the core of an independent sentence.

For example
I walked, they walk, and she walks are finite verbs* (to) walk is an infinitive.
I lived in Germany.* "I" is the subject. "Lived" describes what the subject did. "Lived" is a finite verb. Examples
The truck demolished the restaurant.
The leaves were yellow and sickly.