The word Intertrafic is misspelled against Intertraffic, a noun meaning "Mutual trade of traffic."
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Intertraffic has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Intertra & ic which should not be misspelled with single 'F'
Wrong Spelling:  Intertra-f-ic 
Correct Spelling:  Intertra-ff-ic 
Find more wrongly spelled words of Intertraffic to spell it well.