Is 攄 commonly used in modern Chinese?

No, it is primarily found in classical or literary contexts and is rare in modern usage.

What is the difference between 攄 and 抒?

Both mean 'to express,' but 攄 is more classical and implies a fuller, more unrestrained expression, while 抒 is more common in modern usage.

It can be used for names with a classical, literary feel, but it is uncommon and may be difficult for many people to recognize or write.

攄Tone 1

shū ｜ 18 strokes ｜ radical:

To express;

to vent;

to spread out;

to unfold;

to give free rein to (emotions, thoughts).

To expressto ventto spread out

Express feelingsGive free rein to one's thoughtsWrite out one's ideasVent indignationExpress one's willUnfold one's talents

Often used in classical Chinese literature to describe the expression of deep emotions or scholarly thoughts.
Common in formal or literary contexts, particularly in essays and poetry.
The character carries a connotation of thoroughness and unrestrained expression.