Question

What's the difference between 'start' and 'begin'?

Answer 1

verb: start; 3rd person present: starts; past tense: started; past participle: started; gerund or present participle: starting
1.
come into being; begin or be reckoned from a particular point in time or space.
"the season starts in September"
synonyms: begin, commence, get underway, go ahead, get going; More
informalkick off
"the meeting starts at 7:45"

BEGIN
begin; 3rd person present: begins; past tense: began; gerund or present participle: beginning; past participle: begun
1.
start; perform or undergo the first part of (an action or activity).
"theorists have just begun to address these complex questions"
synonyms: start, commence, set about, go about, embark on, launch into, get down to, take up; More
initiate, set in motion, institute, inaugurate, get ahead with;
informalget cracking on, get going on
"we began work"

come into being or have its starting point at a certain time or place.
"the ground campaign had begun"