Employment History File, Extremely High Frequency, see: http://www.acronymfinder.com/af-query.asp?Acronym=EHF&Find=find&string=exact
It is an abbreviation; an acronym is an abbreviation which forms a word, but 'USF' is not so.
acronym
An acronym is a word created from the first letters of each word in a series of words. "Keyboard" is only one word, not a series of words, so it is not possible to form an acronym for it.Perhaps you are looking for an abbreviation for "keyboard". The most common abbreviation is "kbd".
British Petroleum. Technically it's an acronym not an abbreviation. An abbreviation is a shortened version of a word, such as abbr. for abbreviation. An acronym is any combination of abbreviations, contractions or initialisms. BP is an initialism and is therefore an acronym.
No, abbreviation.
Emo is not an acronym, it is just an abbreviation for emotionally unstable.
It's not an acronym, its an abbreviation for Guantanamo Gay.
not always, but sometimes yes. You can say that MTV is an abbreviation for Music Television, and you can say that is an acronym for Music Television. However you cannot say the state abbreviation for California, CA, is an acronym for California.
Maybe
polio is an abbreviation for poliomyelitis
blend
T.N.T. Techinically it is an acronym.