A data frame containing all possible parts-of-speech, as per the openNLP package. This list was taken from Part-Of-Speech Tagging with R. pos_tags contains the following two columns:

tag

The abbreviation for the part-of-speech (i.e., its tag)

description

A short description of the part-of-speech

pos_tags

Format

An object of class data.frame with 36 rows and 2 columns.