Proper noun
(US) Initialism of National Air and Space Museum.
(US) Initialism of National Academy of Sports Medicine.
(US) Initialism of National Association of Schools of Music.
Source: en.wiktionary.orgThe cockpit and nose section of the aircraft were exhibited at the National Air and Space Museum (NASM) in downtown Washington, D.C., for the bombing's 50th anniversary in 1995, amid controversy. Source: Internet
FASM and NASM have similar syntax, but each support different macros that could make them difficult to translate to each other. Source: Internet