Elementary

1.

(dealing with the simplest facts of a subject, introductory, basic) elementary problem ដែលងាយ, elementary school នៃជាន់ដំបូង (បឋម)
Example: An elementary class.

1.

Having only one principle or constituent part; consisting of a single element; simple; uncompounded; as, an elementary substance.

2.

Pertaining to, or treating of, the elements, rudiments, or first principles of anything; initial; rudimental; introductory; as, an elementary treatise.

3.

Pertaining to one of the four elements, air, water, earth, fire.

1.

basic, fundamental, introductory, primary, rudimentary, simple

1.

abstract, abstruse, complex, elaborate, intricate