Are You Sure That 旅行 Sounds the Same As 旅?
First of all, 旅行 sounds the same as 旅, however, they have a slight difference in nuance from each other. Let me introduce the difference in nuance between these and the way to correctly use them today!
旅行 / 旅
Trip, Journey / 旅行, 旅游 / 여행, 방랑 / Du lịch, Chuyến đi
“旅行 and 旅” mean “Trip and Journey” and which have been used for people to travel somewhere. The difference between them is “旅行” sounds basic “trip and vacation”. Whereas “旅” sounds pretty grand and heavier than “旅行” such as “一人旅(travel by one’s self). A hitch-hiker would be using “旅” instead of “旅行“. A family who travels somewhere would be using “旅行” instead of “旅“. “旅行” sounds fun and light, unlike “旅” sound grand and pretty heavy.