1. to bow to; to pay one's respects
2. (bound form) to extend greetings (on a specific occasion)
3. to make a courtesy call
4. (bound form) (of a monarch) to appoint sb to (a position) by performing a ceremony
5. to acknowledge sb as one's (master, godfather etc)
6. (used before some verbs to indicate politeness)

1. gate
2. door
3. gateway
4. doorway
5. opening
6. valve
7. switch
8. way to do something
9. knack
10. family
11. house
12. (religious) sect
13. school (of thought)
14. class
15. category
16. phylum or division (taxonomy)
17. classifier for large guns
18. classifier for lessons, subjects, branches of technology
19. (suffix) -gate (i.e. scandal; derived from Watergate)

classifiers: 扇, 個