Today's sentences that i wanted to say to my boss...... That is actually problem that i've always thought about from i start to work in this company. The division of works for different teams makes efficiency, but also causes a disconnection of others. So even it has been no chance to participate in the beginning of project, I've never had confidence of what i designed. Unfortunately, i have no idea how to figure it out.

'begin' and 'start'..? i feel like they seem to be same meaning, what's the difference of them?