She used a counting frame to solve the math problem.

The counting house was where all the financial transactions were recorded.

Counting numbers are positive integers excluding zero.

He quickly countered with a riposte after dodging his opponent's thrust.

I need to go to the counter to check in for my flight.

I bought some stocks over-the-counter.

The shop was selling under-the-counter goods.

Publications which are counter to the general good are to be forbidden.

Your idea runs counter to our policy.

The teacher gave the students a homework assignment, which was a countable noun.