Milky vs Lactic - What's the difference?

As adjectives the difference between milky and lactic

is that milky is resembling milk in color or consistency while lactic is of, relating to, or derived from milk.

(er)

Resembling milk in color or consistency.

* Alexander Pope

pails high foaming with a milky flood

* Arbuthnot

milky juice

(color science, informal) Of the black in an image, appearing as dark gray rather than black.

(colloquial) Cowardly.

* Shakespeare

Has friendship such a faint and milky heart?

(obsolete) Yielding milk.

* Roscommon

milky mothers

(en adjective)

Of, relating to, or derived from milk

* lactic acid