What's the difference between calcigenous and calx?

Calcigenous

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Definition:

• (a.) Tending to form, or to become, a calx or earthlike substance on being oxidized or burnt; as magnesium, calcium. etc.

Example Sentences:

Calx

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Definition:

• (n.) Quicklime.
• (n.) The substance which remains when a metal or mineral has been subjected to calcination or combustion by heat, and which is, or may be, reduced to a fine powder.
• (n.) Broken and refuse glass, returned to the post.

Example Sentences:

• (1) His fifth album as Aphex Twin - other aliases include AFX, Polygon Window, Caustic Window, Blue Calx, The Dice Man, GAK, Power-Pill and Q-Chastic - is the new double-CD, Drukqs, which ranges from exquisite blue mood piano meditations worthy of Debussy or Erik Satie to furious digital exercises that sound like pneumatic drills gone haywire.