Interesting Vocabulary Continued

[damnfooltalk]

煉: to refine metals/kneading x over a fire

練: to gloss (silk) (this writing of 練る only, temper (steel), polish, tan (leather), kneading over fire, to train/drill/exercise. Culinary: to knead something into paste, nominal prefix 練り○○　= x paste (mustard, adzuki, etc.)
錬: to smelt metals, forge, refine

練れる: to be well-kneaded​, to be seasoned; to be experienced; to be mature and well-rounded​

煉丹／れんたん: elixir of life (prepared from cinnabar in ancient China)​
Other forms: 練丹 【れんたん】

洗練／せんれん: polish; refinement​

Other forms: 洗煉 【せんれん】、洗錬 【せんれん】

精錬／せいれん 

精: refined, ghost, fairy, energy, vitality, semen, excellence, purity, skill

1. refining; refinement; smelting​

2. training

3. Seiren​- place name
4. Refining (metallurgy)​Refining (as in non-metallurgical uses) consists of purifying an impure material, in this case a metal. It is to be distinguished from other processes such as smelting and calcining in that those two involve a chemical change to the raw material, whereas in refining, the final material is usually identical chemically to the original one, only it is purer. The processes used are of many types, including pyrometallurgical and hydrometallurgical techniques.

Other forms: 製錬 【せいれん】、精煉 【せいれん】

試練／しれん: test; trial; probation; ordeal; tribulation

煉獄／れんごく: purgatory​