The letters MSM may refer to men who have sex with men. Still taboo in most parts of the world, msm's are slowly gaining acceptance specially in western societies.
The acronym MSM does not necessarily mean a homosexual. It is a commonly used abbreviation in medicine and psychology to denote men who have sex with men (MSM).
Methylsulfonylmethane
There are many different possible organizations and businesses that the acronym ICAN could stand for. This acronym could stand for the International Cesarean Awareness Network. This acronym could also stand for the Independent Community Arts Network.
Letters that stand for parts of a name are called initials.
There is no acronym with the letters CORNER. It does not stand for anything because it does not exist. No concept or organization uses the acronym CORNER.
Men Sucking (other) Men
The acronym AB stands for Architect Building.
The acronym LR stands for Long Range.
The acronym AC stands for Before Meals.
The acronym AAW stands for Antiair Warfare.
The acronym AAF stands for Army Airfield.
The acronym AD stands for Anno Domini.