Relationship To Other Parts of ISO 639
See also: ISO 639-2 and ISO 639-3Some of the codes in ISO 639-5 codes are also found in the ISO 639-2 "Alpha-3 code" standard. ISO 639-2 contains codes for some individual languages, some ISO 639 macrolanguage codes, and some collective codes; any code found in ISO 639-2 is also found in either ISO 639-3 or ISO 639-5.
Languages, families, or group codes in ISO 639-2 can be of type "group" (g) or "remainder group" (r). A "group" consists of several related languages; a "remainder group" is a group of several related languages from which some specific languages have been excluded. However, in ISO 639-5, the "remainder groups" do not exclude any languages. Because ISO 639-2 and ISO 639-5 use the same Alpha-3 codes, but do not always refer to the same list of languages for any given code, the languages an Alpha-3 code refers to can't be determined unless it is known whether the code is used in the context of ISO 639-2 or ISO 639-5.
| Alpha-3 code | ISO 639-2 Type | ISO 639-2 definition | ISO 639-5 definition |
|---|---|---|---|
afa |
remainder group (r) | Afro-Asiatic languages | all Afro-Asiatic languages |
alg |
normal group (g) | all Algonquian languages | all Algonquian languages |
sqj |
not defined | not defined | Albanian languages |
Read more about this topic: ISO 639-5
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