From the geology course I took in 1975: Minerals are naturally occurring crystals of compound. Snow is a mineral, but volcanic glass is not. Rocks are amalgams of minerals and non-minerals.
In corpus linguistics, a collocation is a sequence of words or terms that co-occur more often than would be expected by chance. In phraseology, collocation is a sub-type of phraseme. An example of a phraseological collocation, as propounded by Michael Halliday, is the expression strong tea.
For usage in biological nomenclature, see Common name. A colloquialism is a word, phrase, or other form used in informal language. Dictionaries often display colloquial words and phrases with the abbreviation colloq. as an identifier. Colloquial language, colloquial dialect, or informal language is a variety of language commonly employed in conversation or other communication in informal situations.