Bayonet and syringe: what they have in common

1. Step 1. Bayonet — has part — Steel blade. The bayonet blade.
2. Step 2. Steel blade — is part of — Knife. A blade with a cutting edge.
3. Step 3. Knife — is part of — Overlocker. A knife for trimming the edge.
4. Step 4. Overlocker — has part — Needle. Needles sew the stitch.
5. Step 5. Needle — is part of — Syringe. A hollow needle.

Open Evothings