JOURNEY具体/抽象都可以(指长途跋涉)
TRAVEL 旅行(过程/动作)例如:he spent most of his time travelling abroad.
TOUR旅游/比赛(到各个地方)
TRIP访问/行程(如往返round trip) journey主要指单程较远距离的海、陆、空“旅行”，表示“去旅行”时，英语该说goon a journey，而不说go to a journeyMr. Smith made a journey from Paris to New York.史密斯先生作了一次从巴黎到纽约的旅行。A pleasant journey to you.祝你一路平安。travel一般指到国外或远方旅行，它同journey不同之处，在于不着重某一目的地，有到各地“游历”的意思，作名词时常用复数形式。He has just returned from his travels.他刚刚旅行回来One day in his travels in China, he got to Guangzhou.他在中国旅行期间，有一天他到达广州．trip常指短距离的，直达目的地的旅行，在日常用语中，trip可与journey通用。I am going on a trip to the seaside during the summer holidays.暑假期间我将去海边旅行。He went on a trip journey to Paris.他到巴黎旅行去了。tour“旅行，周游，观光”，主要目的地是游览或视察，距离可长可短，常带有“最后回到出发地”的含义。He is making a tour of the world.他周游世界去了。They spent two months on a tour through most of the countries of Europe.他们用了两个月的时间去旅行，游历了欧洲的大部分国家。