dal vs red gram

dal

noun
  • Any of many dried husked pulses (legume), including peas, beans and lentils. 

  • A dish made from lentils, cooked with spices, tomatoes and onions etc. 

  • A tropical herb with yellow flowers; the pigeon pea. 

red gram

How often have the words dal and red gram occurred in a corpus of books? (source: Google Ngram Viewer )