All 5 Uses

countenance
in
Henry IV, Part 1
(Auto-generated)

and let men say we be men of good government, being governed, as the sea is, by our noble and chaste mistress the Moon, under whose countenance we steal.
Scene 1.2 *

countenance = face
Well, God give thee the spirit of persuasion, and him the ears of profiting, that what thou speakest may move, and what he hears may be believed, that the true Prince may, for recreationsake, prove a false thief; for the poor abuses of the time want countenance.†
Scene 1.2
O, the Father, how he holds his countenance!†
Scene 2.4
The skipping King, he ambled up and down With shallow jesters and rash bavin wits, Soon kindled and soon burnt; carded his state, Mingled his royalty, with capering fools; Had his great name profaned with their scorns; And gave his countenance, against his name, To laugh at gibing boys, and stand the push Of every beardless vain comparative; Grew a companion to the common streets, Enfeoff'd himself to popularity; That, being dally swallow'd by men's eyes, They surfeited with honey, and began To loathe the taste of sweetness, whereof a little More than a little is by much too much.†
Scene 3.2
but with nimble wing We were enforced, for safety-sake, to fly Out of your sight, and raise this present head: Whereby we stand opposed by such means As you yourself have forged against yourself, By unkind usage, dangerous countenance, And violation of all faith and troth Sworn to tis in your younger enterprise.†
Scene 5.1

Definitions:

(1) (countenance as in: a pleasant countenance)
facial expression; or face; or composure or manner
(2) (countenance as in: giving countenance)
to tolerate, approve, or show favor or support
(3) (meaning too rare to warrant focus)
More rarely, in addition to facial expression, countenance can refer to one's posture and other visible features.