Enough: Sufficiency :: Excess:?

Dog : Canine :: Horse : ? 

Select the word-pair in which the two words are related in the same way as the two word-pair.

Author: Book

Knoll : Hill :: Eclogue: ?

An ‘Island’ is related to ‘Sea’ in the same way as an ‘Oasis’ is related to ‘_____’.

Direction: In the following question, select the related letters from the given alternatives. 

EHJ : KNP : : SVX : ?

Directions: In the following question, there is some relationship between the two terms to the left of (: :) and the same relationship holds between the two terms to the right of (: :) is missing which is given in one of the four alternatives given below the question. Find out the term from amongst the alternatives.
JDRC : GGOF : : SPKW : ?

KML : NPO :: CED : ?