Hard core and Lascivious

Hard core noun - The most dedicated and intensely loyal nucleus of a group or movement.

Lascivious and hard core are semantically related. in lewd topic. In some cases you can use "Lascivious" instead an adjective phrase "Hard core", when it comes to topics like pornographic. vulgar substitute

Lascivious adjective - Depicting or referring to sexual matters in a way that is unacceptable in polite society.

Hard core and lascivious are semantically related. Sometimes you can replace phrase "Hard core" with "Lascivious", this terms are similar.