Difference between Uncommunicative and Deadpan

UNCOMMUNICATIVE vs DEADPAN: NOUN

A blank, expressionless face.
A style of comedic delivery in which something humourous is said or done while not exhibiting a change in emotion or facial expression.
A person, especially a performer, who has or assumes a blank expression.

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

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

Humorless, Humorous, Comedic, Witty, Laconic, Sarcastic, Sardonic, Wry, Droll, Poker faced, Uncommunicative, Incommunicative, Expressionless, Unexpressive, Impassive

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

Humorless, Humorous, Comedic, Witty, Laconic, Sarcastic, Sardonic, Wry, Droll, Poker faced, Uncommunicative, Incommunicative, Expressionless, 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Your child may become withdrawn, uncommunicative, and anxious.

There's more to funny fella Jack Dee than just deadpan wit.
He is known for his distinctly lethargic voice and slow, deadpan.
It is deadpan, episodic, unrelentingly bizarre, continually surprising, and gorgeously written.
Jarmusch and Young having a deadpan conversation about the Bible.
Cranach treats this famous beauty contest as a deadpan comedy.
Bill Murray is always great at delivering deadpan humor.
Boon, whose deadpan expression harkens back to Buster Keaton.
He had a sly, deadpan sense of humor.
His monotone deadpan voice causes Emma to pout.
Her pairing of deadpan lyrics with a deadpan vocal delivery is one of many things that sets her apart.