What is the exact scientific name for grass?

Question

The exact name for grass.

Answer 1

The grass family is called Poaceae and contains thousands of species.

Answer 2

Grass is a common word that generally describes a monocotyledonous green plant in the family Gramineae (Poaceae). True grasses include most plants grown as grains, for pasture, and for lawns (turf). They include some more specialised crops such as lemongrass, as well as many ornamental plants. They also include plants often not recognized to be grasses, such as bamboos or some species of weeds called crab grass.

Answer 3

Which kind of grass??