RichThesaurus
plain as a haystack
vs
plain as the nose on one's face
plain as a haystack
adj
Extremely clear and plain to see.
plain as the nose on one's face
adj
Extremely evident and plain to see.
How often have the words
plain as a haystack
and
plain as the nose on one's face
occurred in a corpus of books?
(source:
Google Ngram Viewer
)