master和lord在表示主人这个意思的时候有什么细微的不同?

lord
noun
a peer of the realm; a man of noble rank or high office
地主,贵族
■(Lord)a title given formally to a baron,and less formally to a marquess,earl,or viscount (prefixed to a family or territorial name)
(正式)男爵；非正式侯爵；伯爵；子爵（用于姓或领地名前）
Lord Derby.
德比男爵.
■(the Lords)the House of Lords,or its members collectively
上议院； 〔总称〕上院*
■(Lord)a courtesy title given to a younger son of a duke or marquess (prefixed to a Christian name)
阁下（用作对公爵或侯爵年纪较轻的儿子的敬称,用于教名前）
Lord John Russell.
约翰•罗素阁下.
■in compound titles of other people of authority
〔官衔的一部分〕长官
Lord High Executioner.
高级执行长官.
■(historical)a feudal superior,especially the proprietor of a manor house
(史)封建领主（尤指庄园宅邸所有者）
■a master or ruler
主人；统治者
our lord the king.
我们的统治者国王陛下.
■(Lord)a name for God or Christ
上帝；耶稣
give thanks to the Lord.
■(Astrology,dated)the ruling planet of a sign,house,or chart
(占星 旧)主星
master
master1
noun
(chiefly historical)a man who has people working for him,especially servants or slaves
(主史)老爷,主人,主子
he acceded to his master's wishes.
他顺从了主人的意愿.
■a person who has dominance or control of something
主宰者,控制者
he was master of the situation.
他是局势的主宰者.
■a machine or device directly controlling another
主控机件.比较 slave
[as modifier]a master cylinder.
主汽缸.
■(dated)a male head of a household
(旧)男主人
the master of the house.
房子的男主人.
■the male owner of a dog,horse,or other domesticated animal
（狗、马等的）男主人
a skilled practitioner of a particular art or activity
专家
I'm a master of disguise.
我是一个善于伪装的人.
■a great artist,especially one belonging to the accepted canon
大师
the work of the great masters is spread around the art galleries of the world.
艺术大师的作品遍布世界各地的美术馆.
■a very strong chess player,especially one who has qualified for the title at international tournaments
象棋大师（尤指国际比赛中获此称号者）.参见 grand master
a chess master.
国际象棋大师.
■(Masters)[treated as sing.](in some sports) a class for competitors over the usual age for the highest level of competition
大师级
a person who holds a second or further degree from a university or other academic institution (only in titles and set expressions)
硕士〔仅用于称号和固定表达〕
a master's degree.
硕士学位.
a Master of Arts.
文学硕士.
a man in charge of an organization or group,in particular
主管,负责人,尤指
■(chiefly Brit.)a male schoolteacher,especially at a public or prep school
(主英)男教师
the games master.
体育教师.
■the head of a college or school
校长
■the presiding officer of a livery company or Masonic lodge
国业公会主管；共济会地方分会会长
■the captain of a merchant ship
船长
■the person in control of a pack of hounds
掌管猎狗的人
■(in England and Wales) an official of the Supreme Court
（英格兰和威尔士）最高法院官员
used as a title prefixed to the name of a boy not old enough to be called ‘Mr’
少爷
Master James Wishart.
詹姆斯•威沙特少爷.
■(archaic)a title for a man of high rank or learning
(古)长官；名师
■the title of the heir apparent of a Scottish viscount or baron
（苏格兰）（子爵或男爵）长子
an original film,recording,or document from which copies can be made
原版,原件
[as modifier]the master tape.
母带.
lord较为正式,一般用于公共场合
master多用于口语和文学作品 ,此外还可以用来指擅长某项技能的人