The act of cleaning a surface or removing moisture
When to use
cleaning windows, wiping hands, tidying desk
The nuance
닦다 is used exclusively for actions that clean a surface by removing dust, moisture, or stains.
닦다 (dakk-da, dakkda) · 문지르다 (mun-ji-reu-da, munjireuda)
닦다 means to clean a surface, while 문지르다 means to rub or move something back and forth.

One lane per word — no nested boxes, just the gist.
The act of cleaning a surface or removing moisture
When to use
cleaning windows, wiping hands, tidying desk
The nuance
닦다 is used exclusively for actions that clean a surface by removing dust, moisture, or stains.
A verb expressing the action of rubbing or moving something back and forth
When to use
rubbing a wound, rubbing a stain on clothes, rubbing hands together
The nuance
문지르다 is used for rubbing or moving something back and forth and does not necessarily imply cleaning or making something clean.
창문을 깨끗하게 닦았다.
chang-mun-eul kkae-kkeus-ha-ge dakk-ass-da., chang mun eul kkae kkeus ha ge dakk ass da.
닦다 is appropriate for cleaning windows.
창문을 문지르다.
chang-mun-eul mun-ji-reu-da., chang mun eul mun ji reu da.
For cleaning windows, use 닦다; 문지르다 implies rubbing, which is inappropriate here.
손을 깨끗하게 닦았다.
son-eul kkae-kkeus-ha-ge dakk-ass-da., son eul kkae kkeus ha ge dakk ass da.
닦다 fits when removing moisture or dirt from hands.
손을 문지르다.
son-eul mun-ji-reu-da., son eul mun ji reu da.
문지르다 is appropriate for rubbing hands together.
옷에 묻은 얼룩을 닦았다.
os-e mut-eun eol-ruk-eul dakk-ass-da., os e mut eun eol ruk eul dakk ass da.
닦다 is correct for removing stains from clothes.
옷에 묻은 얼룩을 문지르다.
os-e mut-eun eol-ruk-eul mun-ji-reu-da., os e mut eun eol ruk eul mun ji reu da.
문지르다 can be used when rubbing to remove stains.
상처 부위를 닦았다.
sang-cheo bu-wi-reul dakk-ass-da., sang cheo bu wi reul dakk ass da.
닦다 is suitable for cleaning wounds.
상처 부위를 문지르다.
sang-cheo bu-wi-reul mun-ji-reu-da., sang cheo bu wi reul mun ji reu da.
Rubbing a wound (문지르다) is inappropriate and can cause irritation.
Which verb should you use when hands are wet?
What verb describes rubbing to remove a stain on clothes?
Which word fits cleaning a surface thoroughly?