Compression
Part of speech: noun
Definition: to increase in density; the act of compressing, or the state of being compressed; compaction the cycle of an internal combustion engine during which the fuel and air mixture is compressed the process by which data is compressed the electronic process by which any sound's gain is automatically controlled
Example sentence: When you take something extremely broad, then it is not a work of expansion or work of compression. It's hard because you have to decide what to throw out.
Concretion
Part of speech: noun
Definition: The process of aggregating or coalescing into a mass.A solid, hard mass formed by a process of aggregation or coalescence.A rounded mass of a mineral, sometimes found in sedimentary rock or on the ocean floor.The action of making something concrete or the result of such an action.