What's the difference between booklouse and deathwatch?

Booklouse

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Definition:

Example Sentences:

Deathwatch

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Definition:

• (n.) A small beetle (Anobium tessellatum and other allied species). By forcibly striking its head against woodwork it makes a ticking sound, which is a call of the sexes to each other, but has been imagined by superstitious people to presage death.
• (n.) A small wingless insect, of the family Psocidae, which makes a similar but fainter sound; -- called also deathtick.
• (n.) The guard set over a criminal before his execution.

Example Sentences:

• (1) When we were doing Deathwatch , he even convinced the director he should masturbate on camera, so they put it into the script.
• (2) But we worked together not long after that, on a film called Deathwatch .