What is the difference bwteen Plutonic and Volcanic rock?

-Plutonic rock cools beneath the surface -> large crystals, course-grained texture, composed of feldspar, quartz, mica (Ex: Granite, Gabbro and Diorite) -Volcanic rock cools on or above the surface -> small crystals, fine grain, and glassy texture, composed of minerals like olivin, pyrocene and plagioclase (Ex: Basalt and Rhyolite)