The following contains two pairs of words which are related to each other in a certain way. Three of the following four word-pairs are alike as these have the same relationship and thus form a group. Which word-pair does NOT belong to that group? (The words must be considered as meaningful English words and must not be grouped based on the number of letters/number of consonants/vowels in the word)

Let's check the all options:

Option (a): Temple - Pray

Temple → Pray: A temple is a place where people go to pray.
​Option (b): Theatre - Movies

Theatre → Movies: A theatre is a place where people go to watch movies.
​Option (c): Park - Swim

However, the relationship for Park → Swim is not as strong:
A park is a place, but swimming is not the primary activity associated with a park.
​Option (d): Restaurant - Dinner

Restaurant → Dinner: A restaurant is a place where people go to have dinner.

Odd one Out: Park - Swim.
Thus, the correct option is (c) Park - Swim.