We are picking up two words for our today’s discussion from the following headline.

Narendra Modi Taps Indian Diaspora in U.S.
Prime Minister Greeted by Boisterous Crowds in New York
– The Wall Street Journal

Diaspora and Boisterous

Diaspora is a word of greek origin which basically referred to the scattering of Jews to countries outside Palestine after the Babylonian captivity. However, the word is now commonly used to refer to any group that has dispersed outside its homeland and is living in a small geographical area as a minority.
Narender Modi taps the Indian diaspora in U.S.
The largest Asian diaspora outside of Southeast Asia is the Indian diaspora.

Boisterous means loud, jolly, noisy and massive. It could be violent and wild too.
Prime minister greeted by the boisterous crowd in New York.
He got scared of the sound of boisterous laughter.