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

number / art name

ordinal marker, often with prefix 第 (used like -st, -nd, -rd, -th in English).

character

science / a field of study

doctoral thesis; dissertation

applied mathematics

everything

(colloquial) current boyfriend