Related by context. Frequent words. (Click for all words.) 49 traced 47 origins 46 origin 45 existed 43 spawned 43 stemmed 41 invented 41 evolved 41 arose 40 occurred 39 derived 39 transmitted 38 modeled 37 prevalent 37 triggered 37 linked 36 surfaced 36 exists 36 contained 36 developed 35 stems 35 originally 35 pioneered 35 rooted 35 ignited 35 conceived 35 consisted 35 spread 35 discovered 35 detected 34 sparked 34 manufactured 34 belonged 34 spreading 34 centered 34 circulating 34 commonly 33 incorporated 33 located 33 exported 33 occurring 33 spreads 33 #s [002] 33 lived 33 refers 32 created 32 generated 32 resides 32 ancient 32 borne 32 primarily 32 relates 32 related 32 came 32 exist 31 referred 31 epicenter 31 adapted 31 marketed 31 used 31 operated 31 traces 31 resemble 31 caused 31 #th century 31 shipped 31 copied 31 traveled 31 based 30 erupted 30 similar 30 imported 30 resulted 30 provoked 30 inspired 30 principally 30 encompasses 30 applies 29 uncovered 29 founded 29 belongs 29 studied 29 belong 29 purported 29 central 29 consists 29 operates 29 popular 29 brought 29 died 29 infected 29 filmed 29 original 28 revived 28 circulated 28 consumed 28 produced 28 fueled 28 started 28 stemming 28 spurred