difference between oar and paddle

oar - (нэг гараар барьдаг сэлүүр) нэг нэг гартаа нэг нэг сэлүүр барин сэлүүрдэхэд нэр нэг сэлүүр нь энэ байна
a long pole with a flat blade at one end that is used for rowing a boat
paddle - (хоёр гараар барьдаг сэлүүр) хоёр гартаа нэг сэлүүр барин сэлүүрдэх гэхэд үүнийг ашиглана. ялангуяа canoe - завиар явах тохиолдолд үүнийг гол төлөв ашиглана
[countable] a short pole with a flat wide part at one or both ends, that you hold in both hands and use for moving a small boat, especially a canoe, through water



       noun                                                                         verb - (only use these words)
oar - (нэг гарт барьдаг сэлүүр)                  ------  row -(сэлүүрдэх)
paddle - (хоёр гарт барьдаг сэлүүр)    ------   paddle - (сэлүүрдэх)

difference between oar and paddle

• used interchangeably, normally a paddle is considered as
  propulsion for a canoe, whereas the oar is for a boat (and
  a pole for a raft or gondola)

• Oars come in pairs and are used for rowing. A paddle is very much like an oar, but it is used with two arms, going to either side of the boat for direction.

• Is an oar latched to the boat therefore you don't need both arms to handle it? 
  
  Another observation, the verb that goes with an oar is row while paddle goes with paddle and not row. Is my understanding correct?

• Oars are usually attached onto the edges of the boat by some "cradle" into which they are set. They are usually longer in length than paddles, which are not attached to the boat.

• an oar is traditionally made from earthen materieals, i.e. iron ore, and hence its name. paddles are traditionally wooden.

• An oar is used with a davit. A paddle is held freely in both hands!

oar

paddle