removing stopwords

In that case, something like:


df = tibble(sentences = c("this is a really long sentence", "R is good for text analysis"))

df |> 
  unnest_tokens(word, sentences) |> 
# A tibble: 7 x 1
1 really  
2 long    
3 sentence
4 r       
5 good    
6 text    
7 analysis

Note that it is often useful to provide a reproducible example when asking for help, otherwise we can only guess at what your data looks like.
FAQ: What's a reproducible example (reprex) and how do I create one?