the eight corners of the earth / the world as a whole

largely; mostly

a lot / a majority

experience (an experience or one's (overall) experience)

to experience

pile up

conjunctive form of 積む (tsumu) [godan]

rough; sparse; wild

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