difficult / hard, probably impossible

to feel / to sense / to experience

to study / to learn

everyday use, common usage, idiomatic usage

use customarily, use commonly

expression (by words, facial, attitude) / representation (of art, play, music) / performance (of actor, player, ...)

express

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend