federate vs weld together

federate

adj
  • Federated, united in an alliance or federation. 

noun
  • a system participating in a collective simulation, particularly within the context of the HLA (High Level Architecture) standard. 

  • A member of a federation. 

verb
  • To unite in a federation. 

weld together

verb
  • Used other than figuratively or idiomatically: see weld, together. 

  • To forge a social or emotional bond between people. 

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