According to Dictionary.com, acronym and abbreviation are two distinct terms that are commonly confused with each other.
Can be confused
abbreviation, acronym, initialism.
Contrastly, Google defines an acronym as a specific type of abbreviation.
Acronym:
an abbreviation formed from the initial letters of other words and pronounced as a word (e.g., ASCII, NASA ).
I know that not all abbreviations are acronyms, but there seems to be contradicting information on whether the reverse is true.
There are some acronyms which take longer to say than their original phrase. As FumbleFingers points out, despite being shorter to write, it takes longer to pronounce www (9 syllables) than world wide web (3 syllables).
Are all acronyms a type of abbreviation, even if the abbreviation takes longer to pronounce when spoken?
A similar question claimed that acronyms and synonyms are both two distinct terms, but does that mean that Google's definition of acronym is incorrect?