Difference between Uncommunicative and Expressionless

UNCOMMUNICATIVE vs EXPRESSIONLESS: ADJECTIVE

Not communicative; not disposed to impart one's thoughts; not free to communicate to others; reserved; taciturn.
Not communicative or disposed to impart one's wealth; not liberal; parsimonious.

Unpronounceable, Unutterable, Noncommittal, Guarded, Tightlipped, Incommunicado, Deadpan, Expressionless, Unrevealing, Closemouthed, Secretive, Impassive, Inexpressive, Unexpressive, Incommunicative

Downlooked, Unmoving, Unemotional, Motionless, Stoic, Inexpressive, Unsmiling, Emotionless, Stony, Poker faced, Uncommunicative, Incommunicative, Deadpan, Unexpressive, Impassive

Unpronounceable, Unutterable, Noncommittal, Guarded, Tightlipped, Incommunicado, Deadpan, Expressionless, Unrevealing, Closemouthed, Secretive, Impassive, Inexpressive, Unexpressive, Incommunicative

Downlooked, Unmoving, Unemotional, Motionless, Stoic, Inexpressive, Unsmiling, Emotionless, Stony, Poker faced, Uncommunicative, Incommunicative, Deadpan, Unexpressive, Impassive

On assessment, Charlotte was uncommunicative, slumped in her chair and answered questions monosyllabically.
They took a long time to assign an adjuster who was quite uncommunicative.
Those review notes include Uncommunicative, Impolite, Problem with meeting location, and Late.
Then we wonder why teenagers are prone to being grouchy and uncommunicative.
To others outside the team, it may appear reserved, uncommunicative, and quiet.
Akers is heavily mutated, uncommunicative, and hostile, forcing Simon to evade him.
In all modes, steering is quick and light but uncommunicative.
Of a waved or watered uncommunicative, close, unconversappearance.
And even allegedly the web site I uncommunicative?.
Your child may become withdrawn, uncommunicative, and anxious.

An expressionless look, caused by reduced movements of the face.
Their expressionless faces convey a mix of resignation and stoicism.
Brimstone, and John Bayou with his expressionless reptile eyes.
Hermione crossed her arms and looked at him, expressionless.
Professor Quirrell looked at Harry Potter, his face expressionless.
Others become more passive, expressionless, depressed, indecisive, or withdrawn.
Post photos of you looking sad or expressionless.
We could heal each other, his face expressionless.
His date, Tiana, remains expressionless but unwaveringly pleasant.
Zhang keeps her face expressionless when she plays.