difference between bother, disturb, and trouble

bother - (залхаах, зовоох, ядаргаатай байх)Often if you disturb someone you will be bothering them. (хэрвээ чи олон дахин disturb - болоод чи түүнийг bother - болгож байна гэсэн үг  - "залхаах")
[transitive] to annoy, worry, or upset someone; to cause someone trouble or pain
     ---- “I'm sorry he was so rude to you.” “It doesn't bother me.”
[transitive] to interrupt someone; to talk to someone when they do not want to talk to you
    ---- Stop bothering me when I'm working.
trouble - (гай болох, бэрхшээл учруулах)a problem, worry, difficulty, etc. or a situation causing this (энэ үг нь "problem, worry, difficulty" - гэсэн утганд илүү ойр гэдгийг сана)
[transitive] to make someone worried or upset
      ---- What is it that's troubling you?
disturb - (саад учруулах, төвөг учруулах)when they are trying to work, sleep and "proper" lady would use "disturb",  If I am reading a novel and someone calls and asks for assistance, the call was a disturbance
to interrupt someone when they are trying to work, sleep, etc.
     ---- I'm sorry to disturb you, but can I talk to you for a moment?

difference between bother and disturb

• They are very similar. You will have to supply a specific sentence that bothers you before I can say more.

• In the sense "Don't bother me now" / "Don't disturb me now" they have very similar meanings, but both words can be used in other ways.
  "It's no BOTHER" - "it doesn't BOTHER me; I don't mind"
  "Don't BOTHER [doing something]" - it's not important enough to worry about, or to BOTHER WITH
  "I can't be BOTHERED" - likewise
  "BOTHER!" - rather old/posh UK-English expletive like "damn!"
  DISTURB generally means to disrupt something that was previously calm or settled.
  DISTURBING describes something that affects you negatively emotionally, for example "The live execution of the prisoner was DISTURBING".

• they are identical in meaning here, but a more "proper" lady would use "disturb".

• If I talk to family members or friends, can I use the verb "to disturb" or it may sound formal?
  
  Example: No, darling ( I'm talking to my wife), you don't disturb me at all, you know you can ask me whatever you want.

• If I were unable to figure out how to put a toner cartridge in my computer printer, I might say to my co-worker who was sitting at an adjacent desk chatting with me "I'm sorry to bother you, but can you show me how to insert this cartridge?" I would not bedisturbing him, because I can see that he is right there next to me, and is not occupied with anything else, but since I shall be asking him for effort he would not have to make if I were more adroit, I am putting him to a bit of bother.
  
  On the other hand, if a house guest had fallen asleep in a chair in my living room, and when I walked into the room I accidently woke that person, I might say "I'm sorry to disturb you" -- but I am not bothering that person by walking into my own living room!

• In my opinion you can disturb someone without bothering them.
  
  If I am reading a novel and someone calls and asks for assistance, the call was a disturbance, but the assistance I might lend might not be a bother. It might be something I could do in an instant.
  
  To me, disturb and bother mean different things.
  
  Often if you disturb someone you will be bothering them.
  
  (If you disturb me while vacuuming the house I might thank you rather than consider it a bother--I am going to have to get a new housekeeper.)

difference between bother and trouble

• bother and trouble both mean to interrupt, disturb (physically) or cause inconvenience, annoyance, etc., where a person is the agent; worry does not have this sense.