Definition: so exceedingly large or extensive as to suggest a giant or mammoth
Usage: a gigantic redwood; gigantic disappointment; a mammoth ship; a mammoth multinational corporation
Definition: above average in size or number or quantity or magnitude or extent
Usage: a large city; set out for the big city; a large sum; a big (or large) barn; a large family; big businesses; a big expenditure; a large number of newspapers; a big group of scientists; large areas of the world