cooperate- to work together

coerce- compel by force

vocal- to speak out

vocabulary- words of a language

quintuplets- five children born at one birth

quintet- group of five

Linear-using a line or lines

Incline-to lean; to slope

Genesis- beginning; origin

Generation- individuals born about the same time

cursory- running quickly over

Cursive- written with a running hand

incredulous- not believing

distinct- not identical

Subtle- difficult to detect, elusive

Subterranean- underground