RichThesaurus
sour grass
vs
upright yellow-sorrel
sour grass
noun
A low spreading plant with yellow flowers and clover-like leaves, Oxalis stricta.
upright yellow-sorrel
noun
A low spreading plant with yellow flowers and clover-like leaves, Oxalis stricta.
How often have the words
sour grass
and
upright yellow-sorrel
occurred in a corpus of books?
(source:
Google Ngram Viewer
)