biotic=living or product or a living substance (examples: germs, fungi, animals, milk, poop, wood) abiotic=not living (examples=rocks, gold, diamonds, water, sunlight) That's why medicine is sometimes called an antibiotic. Biotic, the germs inside you, anti, killing the germs.
Abiotic is a term used in reference to something physical rather than biological, as opposed to biotic. The term can also be used to refer to something that is devoid of life; sterile. Read on from en.wikipedia.org/wiki/Abiotic.