Difference between random and polycrystalline
random
Definitions
adjective
- lacking any definite plan or order or purpose; governed by or depending on chance
Examples
Some random bluster and name-drop: "In 2005, we sponsored Rock the Vote, [garbled, something about wine], we got a chance to connect with President Obama then.
The school's enrolment policy is based on three criteria, after which random selection is used.
Your fellow potential jurors will be chosen at random from the pool available, and then slimmed down to just 12 in court, again at random.
polycrystalline
Definitions
adjective
- composed of aggregates of crystals
Examples
In a polycrystalline metal the crack may extend for only a few grain diameters before the crack propagation changes to stage II.
Compositionally, the most abundant types of lithic fragment are polycrystalline quartz varieties.
That is because mined diamonds are a carbon gem material and synthetic diamonds are polycrystalline.
