The knack of cooking lies in controlling the heat.
He quickly got the hang of it.
cremated remains; ashes (esp. bones)
Only when written 骨
Refers to the bone fragments collected after cremation. Used in funerary contexts.
The bereaved family picked up the bones and placed them in the urn.
After practicing many times, I got the hang of riding a bike.
The relatives gathered the bones at the crematorium.
The teacher showed me the trick to using a kitchen knife.
There's a trick to operating this machine.
コツ in this sense refers to the actual bone fragments collected after cremation, while 遺骨 is the broader, more formal term for a person's cremated remains as a whole.
コツ is a casual, everyday word for a small trick or technique, whereas 秘訣 sounds more formal, framing the tip as a 'secret' to success.
呼吸 in this sense refers to the subtle feel or rhythm needed to do something well, while コツ is the more casual, everyday word for a trick or shortcut.
コツ is a specific trick or knack for doing one particular thing well, while ノウハウ covers a broader accumulated body of practical expertise.
コツ is a colloquial word for the 'trick' or 'knack' to doing something well, while テクニック is a slightly more formal loanword for a defined technique.
コツ is the knack or trick to doing something well, while 技 is the actual technique or move itself.
骨 read as コツ means a knack or trick (or bone fragments in funerary use), while the same kanji read as 骨（ほね) is the ordinary word for a physical bone.
bone fracture; broken bone
skeleton; skeletal structure; build; physique · framework; skeleton
pelvis
antique; curio
open; blatant; undisguised; frank · lewd; crude; indecent
cremated remains; ashes; bones · remains of war dead
skull; cranium
collarbone; clavicle
cartilage; gristle · nankotsu; deep-fried chicken cartilage
Katakana spelling is common and matches usual-kana usage for the knack/skill sense. The reading is こつ.
Kanji spelling for the bone/remains senses. Not normally used for the 'knack' sense.
Hiragana spelling, also used.
From the Sino-Japanese reading of 骨 (bone). The 'knack' sense likely developed from the idea of 'getting to the bone' or essence of a skill.
steel frame; steel beam; steel girder
bleached bone; skeleton
skeleton
bonesetting
human bones; human skeleton
interment of ashes; placing ashes in an urn or tomb
bonesetting
skull
boorish; uncouth; rustic; clumsy; brusque
tibia; shinbone
rebellious spirit; defiant attitude
main point; gist; essentials; framework
pubis; pubic bone
breastbone; sternum
jawbone; mandible
ischium; ischial bone
osteoporosis
backbone; grit; moral fiber
clenched fist; knuckles
fibula · fibular; peroneal
radius (bone)