Meanings
Usage patterns
〈物〉の浮きがいいsomething floats well; has good buoyancy
This wood floats well, so it's used for fishing equipment.
〈物〉に浮きを付けるto attach a float to something (e.g. a fishing line)
I attached a float to the fishing line and cast it into the river.
浮きが沈むthe float sinks (a sign of a fish biting)
The float suddenly sank, so I pulled the rod.
浮きにつかまるto hold onto a float (for support in water)
The child who couldn't swim was holding onto the float.
Expressions
浮きつ沈みつbobbing up and down; rising and falling 浮き彫りにするemboss; carve in relief · bring to the fore; highlight; accentuate 浮き彫りになるbecome distinct; stand out; be highlighted