中

1. noun inside; interior
2. noun, adverb among; within
3. noun middle; center; centre
4. noun, adverb during; while; middle; midst; amid
5. noun interval; gap
6. mean; average
7. takes の, noun second (of three, e.g. sons, volumes); middle
8. noun, takes の medium grade; medium quality
9. noun, archaic red-light district

うち also 内

1. noun, adverb inside; within
2. usually in kana while (e.g. one is young); during; within (e.g. a day); in the course of
3. usually in kana, as 〜のうち among; amongst; (out) of; between
4. noun, usually in kana, also 裡, 裏; as 〜のうちに after a noun representing a state or condition in (secret, chaos, poverty, etc.); amidst; with (e.g. success)
5. within oneself; one's feelings; inner thoughts

ちゅう

1. noun medium (size); average (grade, level, etc.); middle
2. suffix in; within; out of (e.g. ten people); among
3. during; while; in (the course of); within (a period); throughout
4. currently (doing); in the process of; in the middle of; under (e.g. construction, investigation)
5. noun middle way; moderation
6. second volume (of three)
7. abbreviation junior high school; middle school
8. abbreviation China

じゅう · ぢゅう

1. suffix (all) through (e.g. the night); throughout (e.g. the year); all ... long
2. as 〜に within (e.g. the week); in the course of (e.g. today); by the end of
3. all over; throughout (e.g. the world)
4. all (of a group); the whole (family, school, etc.)

チュン

1. noun, abbreviation, mahjong red dragon tile
2. mahjong winning hand with a pung (or kong) of red dragon tiles