Google ngrams
Trigger: !ngr
Try it
URL pattern: https://books.google.com/ngrams/graph?content=query&year_start=1850&year_end=2009&corpus=15&smoothing=0
Searches books.google.com, filed under Reference (words).
Trigger: !ngr
URL pattern: https://books.google.com/ngrams/graph?content=query&year_start=1850&year_end=2009&corpus=15&smoothing=0
Searches books.google.com, filed under Reference (words).