This is the 8670th most frequent Spanish word.
selina
"Selina" is not a standard Spanish word. It may refer to a personal name or could be a misspelling.
In this sentence, 'selina' is used as a noun referring to a specific type of plant or vegetation.
La selina crece junto al río.
The selina grows next to the river.
Here, 'Selina' is a proper noun used as a name for a person.
Vi a Selina en el mercado ayer.
I saw Selina at the market yesterday.
In this instance, 'selina' is employed metaphorically to describe a watery pathway or current.