Lockup vs Lookup - What's the difference?

As nouns the difference between lockup and lookup

is that lockup is (slang) a jail, prison while lookup is an attempt to retrieve data.

(en noun)

(slang) A jail, prison.

:He's in lockup for 30 days for drunk and disorderly.

(UK, chiefly) A storage unit with a door secured by a padlock or deadbolt; a garage

:Joe keeps his other car in a lockup downtown.

(lookups)

An attempt to retrieve data.

My database lookup failed because I misspelled the word.