There is western red cedar roofing, there is white cedar roofing, there is Alaskan yellow cypress roofing which is also referred to as Alaskan yellow cedar roofing. Alaskan yellow cypress roofing, the best by far, is more expensive than the red cedar and the white cedar.
Summing up: 1  An abbreviation is a shortening of a word or a phrase. 2  An acronym is an abbreviation that forms a word. 3  An initialism is an abbreviation that uses the first letter of each word in the phrase (thus, some but not all initialisms are acronyms).
2. the act or process of abbreviating something, or the result of this. acronym (noun) [etymology: 1940s: from Greek akron point or tip + onyma name.]. a word made from the first letters or syllables of other words, and usually pronounced as a word in its own right, . Compare abbreviation, contraction, initialism.noun). 1. a shortened form of a word or phrase. 2. the process or result of abbreviating. acronym (noun) [ORIGIN from Greek akron 'end, tip' + onoma 'name'.]. a word formed from the initial letters of other words (. , ).