There is no right word or wrong word, both are correct. Despite being paronyms (those that, despite the orthographic and phonetic similarity, are very different in their meaning), they are used in very specific situations, as they are prepositions anonymous. Watch:
► Sob: Coming from the Latin word sub, the preposition sob must be used when the intention is to refer to a position of inferiority in relation to something or someone. See just the examples:
Children were playing in a strong storm. (under)
The loving couple were sitting in the moonlight. (under)
Students did poorly on the test because they were under pressure. (condition)
Pedestrians took shelter under the viaduct. (under)
The singer's fans were under strong emotion. (condition)
► About: The preposition about also comes from Latin – super – and should be used when the intention is to refer to a position of superiority in relation to something or someone. Note the examples in the following sentences:
Students placed the books on their desks. (on)
Because of the rain, they had to pass over puddles. (over)
The parents talked to their son about the holiday season. (regarding)
The stars sparkled over the sea. (on)
The discussion about politics got everyone excited. (regarding)
The two prepositions, under and over, must be used in very different situations, as they have opposite meanings.
By Luana Castro
Graduated in Letters