2 syllables:
-faction, action, faction, fraction, paction, rakshan, taction, traction

3 syllables:
abaction, abstraction, abstraktion, attraction, attraktion, bolt-action, break-action, class-action, classaction, coaction, compaction, contaction, contraction, detraction, diffraction, distraction, dymaxion, effraction, enaction, exaction, extraction, group action, impaction, inaction, infraction, live-action, nonaction, olfaction, preaction, proaction, protraction, pump-action, pump action, reaction, redaction, refaction, refraction, retraction, self-action, slide-action, slide action, soustraction, subaction, substraction, subtraction, telaction, tepefaction, transaction

4 syllables:
abreaction, arefaction, assuefaction, benefaction, calefaction, chain reaction, chylifaction, cinefaction, common fraction, complex fraction, compound fraction, contrafaction, counteraction, cross-reaction, delayed-action, delayed action, direct-action, direct action, double-action, excalfaction, frigefaction, half-reaction, human action, interaction, in full action, labefaction, learned reaction, legal action, lever-action, liquefaction, liquifaction, lubrifaction, malefaction, man of action, out of action, overaction, patefaction, petrifaction, pinguefaction, plan of action, police action, proper fraction, pulpifaction, putrefaction, rarefaction, rarefraction, reenaction, retroaction, rubefaction, sakanaction, satisfaction, scene of action, simple fraction, single-action, social action, spargefaction, tabefaction, torrefaction, tumefaction, underaction, underfaction, vitrifaction

5 syllables:
abfraction, chemical action, colliquefaction, coming attraction, congelifraction, continued fraction, counter-attraction, counterattraction, cryoextraction, decimal fraction, defence reaction, defense reaction, dissatisfaction, evasive action, immune reaction, improper fraction, insatisfaction, law of mass action, microtransaction, naked attraction, natural action, obstupefaction, overreaction, photoreaction, piano action, possible action, pseudoreaction, self-satisfaction, semi-abstraction, semiabstraction, startle reaction, strong interaction, unsatisfaction, weak interaction, x-ray diffraction

6 syllables:
affirmative action, allergic reaction, behind the attraction, capillary action, chemical attraction, chemical reaction, conditioned reaction, conversion reaction, electroextraction, immunoreaction, impossible action, index of refraction, insulin reaction, intelligenzaktion, magnetic attraction, military action, nuclear reaction, party to the action, physical attraction, uterine contraction, wasserman reaction

7 syllables:
accord and satisfaction, anxiety reaction, carrying into action, conditional reaction, endothermic reaction, exothermic reaction, party to the transaction

8 syllables:
fundamental interaction, gravitational attraction, law of action and reaction, nuclear fusion reaction, parasocial interaction, photochemical reaction, thermonuclear reaction, type i allergic reaction

9 syllables:
gravitational interaction, physiological reaction

10 syllables:
electromagnetic interaction, hypersensitivity reaction

2 syllables:
axone, caption, claxon, flaxen, jackson, klaxon, sachsen, saxon, taxon, waxen

3 syllables:
aflaxen, contraption, old saxon, robaxin, shahaptian, west saxon

4 syllables:
andrew jackson, anglo-saxon, ceftriaxone