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.
Definition of ECHOLOCATION. : a physiological process for locating distant or invisible objects (as prey) by sound waves reflected back to the emitter (as a bat) from the objects. See echolocation defined for kids. ADVERTISEMENT.