lockup

As nouns the difference between cockup and lockup

is that cockup is an alternative spelling of lang=en while lockup is a jail, prison.

As nouns the difference between lockup and mockup

is that lockup is a jail, prison while mockup is a prototype, usually low-fidelity, such as paper illustrations, screenshots, or simple configurations of screens with limited interaction.

As nouns the difference between lockup and null

is that lockup is (slang) a jail, prison while null is zero, nil; the cardinal number before einn.

As nouns the difference between lockup and lookup

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