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買い換える， 買い替える， 買いかえる， かいかえる
1. to buy a replacement, to replace by buying something new
tbd
方， ほう
1. direction, way, side, area (in a particular direction)
2. side (of an argument, etc.), one's part
3. type, category
4. field (of study, etc.)
5. indicates one side of a comparison
6. way, method, manner, means
7. length (of each side of a square)
方向，……侧，……边；……方；比较的一方；路，办法；边
が
1. indicates the subject of a sentence
2. indicates possession
3. but, however, (and) yet, though, although, while
4. and
5. used after an introductory remark or explanation
6. regardless of ..., whether ... (or not), no matter ...
7. indicates a des...
tbd
