Faux and Make-believe

Faux adjective - Being such in appearance only and made with or manufactured from usually cheaper materials.

Make-believe and faux are semantically related. In some cases you can use "Make-believe" instead an adjective "Faux".

Make-believe adjective - Not real and existing only in the imagination.

Faux and make-believe are semantically related. Sometimes you can use "Faux" instead an adjective phrase "Make-believe".