This is the 7560th most frequent Spanish word.
joan
"Joan" is not a standard Spanish word; it is typically a Catalan male name equivalent to "John" in English.
Here, 'Joan' is used as a proper noun, specifically as a personal name.
Joan es un nombre común en España.
Joan is a common name in Spain.
In this sentence, 'Joan' refers to the famous author Joan Didion.
Te recomiendo el libro de Joan Didion.
I recommend to you the book by Joan Didion.
In this case, assuming 'Joan' is used metaphorically or as a placeholder for 'consider/look,' it acts as a verb-like entity.