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sideboard vs. credenza

sideboard

[sahyd-bawrd, -bohrd] / ˈsaɪdˌbɔrd, -ˌboʊrd /

noun

a piece of furniture, as in a dining room, often with shelves, drawers, etc., for holding articles of table service.
a board forming a side or a part of a side; sidepiece.
Slang. sideboards, side whiskers.

credenza

[kri-den-zuh] / krɪˈdɛn zə /

noun

Also a sideboard or buffet, especially one without legs.
a closed cabinet for papers, office supplies, etc., often of desk height and matching the other furniture in an executive's office.
Ecclesiastical. credence.