Blue-sky and Phantasmic

Blue-sky adjective - Without immediate commercial value.

Phantasmic and blue-sky are semantically related in illusive topic. In some cases you can use "Phantasmic" instead an adjective phrase "Blue-sky".

Phantasmic adjective - Not real and existing only in the imagination.

Blue-sky and phantasmic are semantically related in illusive topic. You can use "Blue-sky" instead an adjective "Phantasmic".