1) Alienage 2) Curiousness 3) Foreignness 4) Strangeness 5) The quality of being alien 1) Alienage 
• (n.) The status or legal condition of an alien; alienage. • (n.) The study or treatment of diseases of the mind.
Al'ien·ism noun 1. The status or legal condition of an alien; alienage. « The law was very gentle in the construction of the disability of alienism . Kent. » 2. The study or treatment of diseases of the mind. 
noun an obsolete term for the study and treatment of mental illness