Blue-sky and Bright side

Blue-sky adjective - Without immediate commercial value.

Bright side and blue-sky are semantically related. In some cases you can use "Bright side" instead a noun phrase "Blue-sky".

Bright side noun - A consoling aspect of a difficult situation.

Blue-sky and bright side are semantically related. Sometimes you can replace phrase "Blue-sky" with "Bright side", this phrases are similar.