The mass of 1 mole of an element expressed in grams is called its gram atomic mass.

The mass of 1-mole atoms of an element expressed in grams is called its gram atomic mass.

Gram Atomic mass is just the atomic mass expressed in grams ...ie, atomic mass with gram as units. Our book says that gram atomic mass and gram atom are the same thing (similarly for gram molecule and gram molecular mass) . But later a formula is given that : Gram atom = mass in grams / Atomic mass [RAM].

There are questions also that use this formula ( similarly for gram molecule) in which we have to find the number of "gram atoms " in a given mass of substance.

So what is the real meaning of gram atom and the formula ( and is is similar for gram molecules) ?

_________ is the mass, in grams, of one mole of atoms in a monatomic chemical element.