travel vs travel by

Other hyponyms of travel include circulate, go around, spread, carry, ease, whish, float, swap, seek, whine, fly, ride, come, ghost, betake oneself, overfly, pass over, travel, wend, do, raft, get about, get around, repair, resort, cruise, journey, travel, come, come up, round, trundle, push, travel purposefully, swing, cast, drift, ramble, range, roam, roll, rove, stray, swan, tramp, vagabond, wander, take the air, walk, meander, thread, wander, weave, wind, forge, spirt, spurt, crawl, creep, scramble, slide, slither, roll, wheel, glide, bounce, jounce, breeze, be adrift, blow, drift, float, play, float, swim, swim, walk, move around, turn, circle, slice into, slice through, drift, err, stray, run, step, drive, motor, automobile, ski, fly, wing, steam, steamer, tram, taxi, ferry, caravan, ride, sit, prance, swim, arise, come up, go up, lift, move up, rise, uprise, ascend, go up, come down, descend, fall, go down, fall, crank, zigzag, follow, travel along, advance, go on, march on, move on, pass on, progress, draw back, move back, pull away, pull back, recede, retire, retreat, withdraw, retrograde, continue, go forward, move ahead, proceed, back, pan, follow, lead, precede, follow, pursue, return, derail, jump, flock, accompany, billow, circulate, circle, angle, pass, go by, go past, pass, pass by, surpass, hurry, speed, travel rapidly, zip, speed, zoom, drive, belt along, bucket along, cannonball along, hasten, hie, hotfoot, pelt along, race, rush, rush along, speed, step on it, shack, trail, shuttle, hiss, whoosh, whisk, career, circuit, lance, go around, outflank, propagate, draw, change, transfer, swash, pace, step, tread, step, hurtle, retreat, whistle, island hop, plough, plow, lurch, sift, fall, drag, run, bang, precess, move around, travel, ride, snowshoe, beetle.