பொருள் : The height of the ground on which something stands.
							எடுத்துக்காட்டு : 
							The base of the tower was below grade.
							
ஒத்த சொற்கள் : grade
பொருள் : The floor of a building that is at or nearest to the level of the ground around the building.
ஒத்த சொற்கள் : first floor, ground floor