Dilate vs Expatiate - What's the difference?

Dilate is a related term of expatiate.

is that dilate is while expatiate is to range at large, or without restraint.

(dilat)

To enlarge; to make bigger.

The eye doctor put drops in my eye to dilate the pupil so he could see the nerve better.

To become wider or larger; to expand.

His heart dilates and glories in his strength.

(ambitransitive) To speak largely and copiously; to dwell in narration; to enlarge; with "on" or "upon".

* Shakespeare

Do me the favour to dilate at full / What hath befallen of them and thee till now.

* Crabbe

But still on their ancient joys dilate .

* dilatability * dilatable * dilation * dilative

(expatiat)

To range at large, or without restraint.

* Alexander Pope

Bids his free soul expatiate in the skies.

To write or speak at length; to be copious in argument or discussion, to descant.

*1851 ,

Now, as the business of standing mast-heads, ashore or afloat, is a very ancient and interesting one, let us in some measure expatiate here.

* Addison

He expatiated on the inconveniences of trade.

* 2007 , Clive James, Cultural Amnesia (Picador 2007, p. 847)

*:“It can't fly,” he expatiated . “It can move forward only by hopping.”

(obsolete) To expand; to spread; to extend; to diffuse; to broaden.