ABCs and Prelusive

ABCs noun - The elementary stages of any subject (usually plural).

Prelusive and ABCs are semantically related. In some cases you can use "Prelusive" instead an adjective "ABCs".

Prelusive adjective - Coming before the main part or item usually to introduce or prepare for what follows.

ABCs and prelusive are semantically related. Sometimes you can use "ABCs" instead an adjective "Prelusive".