as well as vs in lieu of

as well as

conj

  • And, in addition. 

  • Used other than figuratively or idiomatically: see as, well. 

prep

  • In addition to; further to. 

in lieu of

prep

  • Instead of; in place of. 

  • In light of. 

How often have the words as well as and in lieu of occurred in a corpus of books? (source: Google Ngram Viewer )