Regular verb:
Regular verb follows the standard rules of grammar for forming the past tense and past participle.
For example, the past tense of "talk" is "talked".
Note: To form past tense and past participle normally we add "ed" to the end
of the verb.This is the normal rules for regular verb.
For example, "walk" becomes "walked".
Irregular verb:
An irregular verb is a verb that does not follow the standard rules of
grammar for forming the past and past participle.
For example, the past tense of "eat" is "ate" and not "eated".