Same form of table (4)
I believe the answer is:
mesa
'table' is the definition.
('mesa' can be a synonym of 'table')
'same form' is the wordplay.
'form' indicates an anagram.
'same' with letters rearranged gives 'MESA'.
'of' is the link.
(Other definitions for mesa that I've seen before include "US steep-sided tableland" , "In the USA, a steep-sided flat-topped hill" , "Flat-topped tableland" , "High land" , "Flat-topped mountain" .)