I'm picturing a workshop where an artist asks, 'What's that PWM mean?' and the teacher says 'Pulse Width Modulation, we'll get to that after the break.' What are the chances that the artist might just not come back? And I'm not picking on artists, just trying to further dramatize a metaphor.
Hey! I'm an artist! 
I think 'analogWrite' is right on.. (sorry). It pairs with 'digitalWrite' and that is the point/contrast/teachable moment. 'pwmWrite' is just acronym obscure. Engineers seem to love acronyms and abhor verbosity (or typing..) but neither are good for learners.