a large warship using during the 16-17th century in Japan

ship, vessel, larger ship

history / the study of history

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

to research, to study

a piece of research, a study, investigation

ship, vessel, larger ship

ship, vessel, large ship