Deep vs. Meaningful

Difference Between Deep and Meaningful
Deepadjective
Extending far away from a point of reference, especially downwards.
Meaningfuladjective
Having meaning, significant.
I think we made a meaningful contribution to this project today.Deepadjective
Extending far down from the top or surface; having its bottom far down.
We hiked into a deep valley between tall mountains.There was a deep layer of dust on the floor; the room had not been disturbed for many years.Meaningfuladjective
having a meaning or purpose;
a meaningful explanationa meaningful discussiona meaningful pauseDeepadjective
Far in extent in another (non-downwards, but generally also non-upwards) direction away from a point of reference.
The shelves are 30 centimetres deep. — They are deep shelves.Deepadjective
In a (specified) number of rows or layers.
a crowd three deep along the funeral processionDeepadjective
Thick.
That cyclist's deep chest allows him to draw more air.Deepadjective
Voluminous.
to take a deep breath / sigh / drinkDeepadjective
A long way inside; situated far in or back.
deep into the forest;deep in the forestDeepadjective
Complex, involved.
Deepadjective
Profound, having great meaning or import, but possibly obscure or not obvious.
That is a deep thought!Deepadjective
To a significant, not superficial, extent.
I just meant to help out a little, but now I'm deep into it.They're deep in discussion.Deepadjective
Hard to penetrate or comprehend; profound; intricate; obscure.
a deep subject or plotDeepadjective
Of penetrating or far-reaching intellect; not superficial; thoroughly skilled; sagacious; cunning.
Deepadjective
Low in pitch.
She has a very deep contralto voice.Deepadjective
(of a color) Highly saturated.
That's a very deep shade of blue.Deepadjective
(sleep) Sound, heavy (describing a state of sleep from which one is not easily awoken).
He was in a deep sleep.Deepadjective
Immersed, submerged (in).
deep in debt;deep in the mud;waist-deep in the muddy waterDeepadjective
Muddy; boggy; sandy; said of roads.
Deepadverb
Deeply.
Deepnoun
The deep part of a lake, sea, etc.
creatures of the deepDeepnoun
A silent time; quiet isolation.
the deep of nightDeepnoun
(rare) A deep shade of colour.
Deepnoun
The profound part of a problem.
Deepnoun
(with "the") The sea, the ocean.
Deepnoun
(cricket) A fielding position near the boundary.
Russell is a safe pair of hands in the deep.Deepnoun
the central and most intense or profound part;
in the deep of nightin the deep of winterDeepnoun
a long steep-sided depression in the ocean floor
Deepnoun
literary term for an ocean;
denizens of the deepDeepadjective
relatively deep or strong; affecting one deeply;
a deep breatha deep sighdeep concentrationdeep emotiona deep trancein a deep sleepDeepadjective
marked by depth of thinking;
deep thoughtsa deep allegoryDeepadjective
having great spatial extension or penetration downward or inward from an outer surface or backward or laterally or outward from a center; sometimes used in combination;
a deep wella deep divedeep watera deep casserolea deep gashdeep massagedeep pressure receptors in musclesdeep shelvesa deep closetsurrounded by a deep yardhit the ball to deep center fieldin deep spacewaist-deepDeepadjective
very distant in time or space;
deep in the pastdeep in enemy territorydeep in the woodsa deep space probeDeepadjective
extreme;
in deep troubledeep happinessDeepadjective
having or denoting a low vocal or instrumental range;
a deep voicea bass voice is lower than a baritone voicea bass clarinetDeepadjective
strong; intense;
deep purplea rich redDeepadjective
relatively thick from top to bottom;
deep carpetsdeep snowDeepadjective
extending relatively far inward;
a deep borderDeepadjective
(of darkness) very intense;
thick nightthick darknessa face in deep shadowdeep nightDeepadjective
large in quantity or size;
deep cuts in the budgetDeepadjective
with head or back bent low;
a deep bowDeepadjective
of an obscure nature;
the new insurance policy is written without cryptic or mysterious termsa deep dark secretthe inscrutible workings of Providencein its mysterious past it encompasses all the dim origins of liferituals totally mystifying to visitors from other landsDeepadjective
difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge;
the professor's lectures were so abstruse that students tended to avoid thema deep metaphysical theorysome recondite problem in historiographyDeepadjective
exhibiting great cunning usually with secrecy;
deep political machinationsa deep plotDeepadverb
to a great depth;
dived deeplydug deepDeepadverb
to an advanced time;
deep into the nighttalked late into the eveningDeepadverb
to far into space;
penetrated deep into enemy territorywent deep into the woods