Similar capital in Uganda, Angola so different (9)
I believe the answer is:
analogous
'similar' is the definition.
(similar in meaning)
'capital in uganda angola so different' is the wordplay.
'capital in' says to take the initial letters.
'different' indicates an anagram.
The initial letter of 'uganda' is 'u'.
'u'+'angola'+'so'='uangolaso'
'uangolaso' with letters rearranged gives 'ANALOGOUS'.
(Other definitions for analogous that I've seen before include "similar" , "Comparable in certain respects" , "Eg, mastic" , "show correspondence" , "corresponding" .)