兄弟【きょうだい】
siblings, brothers and sisters, brothers, siblings-in-law, brothers-in-law, sisters-in-law, mate, friend
弟子【でし】
pupil, disciple, adherent, follower, apprentice, young person, teacher's student-helper
弟子入り【でしいり】
becoming a pupil (of), becoming an apprentice
義弟【ぎてい】
brother-in-law (spouse's younger brother or younger sister's husband), younger stepbrother
師弟【してい】
teacher and student
弟妹【ていまい】
younger brother and sister
実弟【じってい】
biological younger brother
子弟【してい】
children, sons, children and younger brothers, young people
舎弟【しゃてい】
one's younger brother, underling (e.g. in yakuza), junior male peer, sworn younger brother
内弟子【うちでし】
private pupil, apprentice
兄弟子【あにでし】
senior pupil (of the same master), senior disciple, senior student, senior member
愛弟子【まなでし】
favorite pupil, favourite pupil, teacher's pet
末弟【ばってい】
youngest brother, last disciple
徒弟【とてい】
apprentice
親兄弟【おやきょうだい】
parents and siblings, one's relatives