- ma, mama, mamma, mom, momma, mommy, mammy, mum, mummy, mater - informal terms for a mother
--1 is a kind of mother, female parent
- Master of Arts, MA, Artium Magister, AM - a master's degree in arts and sciences
--2 is a kind of master's degree
- milliampere, mA - one thousandth of an ampere
--3 is a kind of current unit
--3 is a part of ampere, amp, A - Massachusetts, Bay State, Old Colony, MA - a state in New England; one of the original 13 colonies
--4 is a kind of American state
--4 is a part of New England
--4 has parts: --4 has particulars: Pittsfield; Springfield