This is the 8624th most frequent Spanish word.
samuel
"Samuel" is a proper noun, a male given name of Hebrew origin, used in Spanish and English.
The word 'Samuel' is used here as a proper noun referring to a person's name.
Samuel fue a la tienda por la tarde.
Samuel went to the store in the afternoon.
'Samuel' is used here as a specific name to identify the person being talked about.
El nombre de mi hermano menor es Samuel.
My younger brother's name is Samuel.
Again, 'Samuel' is a proper noun representing an individual in the sentence.