Difference between Uncommunicative and Tightlipped

UNCOMMUNICATIVE vs TIGHTLIPPED: 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

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

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Your child may become withdrawn, uncommunicative, and anxious.

The Jovians are as elusive and tightlipped as always and have neither denied nor confirmed the rumors.
Ableist ideas about pain as weakness or making excuses keep me tightlipped about the driving force behind most of my cravings at sobriety meetings.
He placed them on the desk, to one side of Bascom, and Tug gave him a tightlipped grin of approval.
Authorities have been tightlipped about the specifics of their investigation, including what they hope to learn from examining Savio's body.