Mangel

A deficiency or need (of something desirable or necessary); an absence, want, dearth

• This lack of responsibility is driving me crazy.

  Diese Verantwortungslosigkeit bringt mich auf die Palme.

  Tatoeba · FeuDRenais2 · CC BY 2.0 FR

• For the lack of something better to do, Tom started cleaning his room.

  Weil er nichts Besseres zu tun hatte, fing Tom an, sein Zimmer sauber zu machen.

  Tatoeba · CK · CC BY 2.0 FR

Mangel

A defect or failing; moral or spiritual degeneracy

To be without, not to have, to need, to require

• He is lacking in experience.

  Es mangelt ihm an Erfahrung.

  Tatoeba · CM · CC BY 2.0 FR

• Tom lacks experience, doesn't he?

  Tom mangelt es an Erfahrung, nicht wahr?

  Tatoeba · CK · CC BY 2.0 FR

To be short (of or for something)

To be in want

To see the deficiency in (someone or something); to find fault with, to malign, reproachselten