Nonprofit and Unprofitable

Nonprofit adjective - Not commercially motivated.

Unprofitable and nonprofit are semantically related In some cases you can replace term "Unprofitable" with "Nonprofit", this adjectives are similar.

Unprofitable adjective - Producing no results.

Nonprofit and unprofitable are semantically related in producing no profit or gain topic. You can use "Nonprofit" instead an adjective "Unprofitable".