COMPARATIVE.

More, (or the termination er,) mas——than, que.
He is richer, or more rich than she.   El es mas rico que ella.

Less, ménos——than, que.
She is less rich than he.   Ella es ménos rica que él.

As, (or so,) tan——as, como.
He is as rich as she.   El es tan rico como ella.

As much, (so much,) tanto or tanta——as, como.
She has as much money as he.   Ella tiene tanto dinero como él.
She has as much beauty as modesty.   Ella tiene tanta hermosura como modestia.

As many, (so many,) tantos or tantas——as, como.
He has as many books as his brother.   El tiene tantos libros como su hermano.
As many houses.   Tantas casas.

The more, cuanto mas——the more, tanto mas.
The more he studies, the more he learns.   Cuanto mas estudia, tanto mas aprende.

The less, cuanto ménos——the less, tanto ménos.
The less he works, the less he earns.   Cuanto ménos trabaja, tanto ménos gana.

Greater, mayor; less, menor; better, mejor; worse, peor, superior, superior, &c.