An individual officer is also called a ' (plural '), or, informally, a guard. A police station is called a " station". ' is also the lowest rank within the force, also used as a title (e.g. " John Murphy"), analogous to the British term "constable" or the American "officer" ("deputy/trooper/etc."). "Guard" is the most common form of address used by members of the public speaking to a garda on duty. A female officer was once officially referred to as a ' (; "female guard"; plural '). This term was abolished in 1990, but is still used colloquially in place of the now gender-neutral '.