alike vs tantamount

alike

adj
  • Having resemblance or similitude; similar; without difference. 

adv
  • In the same manner, form, or degree; in common; equally. 

tantamount

adj
  • Equivalent in meaning or effect; amounting to the same thing in practical terms, even if being technically distinct. 

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