Here's a short story:

Phonology is a branch of linguistics concerned with the systematic organization of sounds in languages. It has traditionally focused largely on the study of the systems of phonemes in particular languages (and therefore used to be also called phonemics, or phonematics), but it may also cover any linguistic analysis either at a level beneath the word (including syllable, onset and rime, articulatory gestures, articulatory features, mora, etc.) or at all levels of language where sound is considered to be structured for conveying linguistic meaning. Phonology also includes the study of equivalent organizational systems in sign languages. 

The word phonology (as in the phonology of English) can also refer to the phonological system (sound system) of a given language. This is one of the fundamental systems which a language is considered to comprise, like its syntax and its vocabulary. 

Phonology is often distinguished from phonetics. While phonetics concerns the physical production, acoustic transmission and perception of the sounds of speech, phonology describes the way sounds function within a given language or across languages to encode meaning. For many linguists, phonetics belongs to descriptive linguistics, and phonology to theoretical linguistics, although establishing the phonological system of a language is necessarily an application of theoretical principles to analysis of phonetic evidence. Note that this distinction was not always made, particularly before the development of the modern concept of the phoneme in the mid 20th century. Some subfields of modern phonology have a crossover with phonetics in descriptive disciplines such as psycholinguistics and speech perception, resulting in specific areas like articulatory phonology or laboratory phonology. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: When was the concept of the phoneme put forth?
Guess: the mid 20th century.

Question: Does phonology usually focus on phonemes is certain languages?
Guess: yes

Question: Did phonology have a different name at one point?
Guess: yes

Question: More than one?
Guess: yes

Question: What is one of those names?
Guess: phonematics

Question: And the other name?
Guess: phonemics

Question: Is phonology commonly differentiated from something?
Guess: yes

Question: From what?
Guess: phonetics

Question: How many concepts does phonetics concern?
Guess: Three

Question: And one of those concepts is?
Guess: physical production of the sounds of speech

Question: And another one?
Guess: the acoustic transmission of those sounds

Question: And the last one?
Guess: The perception of the sounds

Question: According to people who work in the field to which brand of linguistics does phonetics belong to?
Guess: descriptive linguistics

Now answer the following question in the same format.

Question: And does phonology belong to a specific one?

yes