RichThesaurus
earn one's crust
vs
put food on the table
earn one's crust
verb
To earn money, to do something as a job.
put food on the table
verb
To provide enough money to cover basic necessities.
How often have the words
earn one's crust
and
put food on the table
occurred in a corpus of books?
(source:
Google Ngram Viewer
)