A prison is a generic term that may be applied to maximum security institutions, often known as penitentiaries, and medium security facilities, often called correctional institutions or reformatories. An attorney is someone legally appointed or empowered to act for another, usually, but not always, a lawyer. An attorney at law is a lawyer. Do not use lawyer as a formal title.
Lie indicates a state of reclining.
It does not take a direct object. Its past tense is lay. Its past participle is lain and its present participle is lain. I will lie on the beach all day. I laid the book on the table.