[Grammar] 'learn to swin' or 'learn swimming'?

[wotcha]

I've knowm that the verb 'learn' is always followed by an infinitive.

Then, why is it possible to say 'I learn swamming' instead of 'I learn to swim'?

 

[riquecohen]

I've knowm that the verb 'learn' is always followed by an infinitive. Not always. "I'm learning French."

Then, why is it possible to say 'I learn swamming' instead of 'I learn to swim'?