In general terms, an analogy is a cognitive process that consists of applying the relationship or meaning established between two or more elements or concepts into new ones. This implies multiple mental processes including analysis to understand the relationship or meaning of the original or source and use the same relationship or meaning in the target or new concepts.
In the case of the two concepts presented "tire : truck" the relationship between both concepts is one of "part of a whole", considering the tire is one part of the truck, this means the two concepts or word that complete this analogy should express the same type of relationship and therefore the word set that completes this analogy is "finger: hand" as in the same way a tire is part of a truck, a finger is part of a hand.
