equivalent of vitakkasaṅkappaBuddhist Dictionary by NYANATILOKA MAHATHERA
saṅkappa:'thought',is a synonym of vitakka (q.v.).For sammā-s.,or right thought,s.magga (2).
saṅkappaConcise Pali-English Dictionary by A.P. Buddhadatta Mahathera
saṅkappa:[m.] intention; purpose.
saṅkappaPTS Pali-English dictionary The Pali Text Society's Pali-English dictionary
Saṅkappa,[saṁ+kḷp,cp.kappeti fig.meaning] thought,intention,purpose,plan D.III,215; S.II,143 sq.; A.I,281; II,36; Dh.74; Sn.154,1144; Nd1 616 (=vitakka ñāṇa paññā buddhi); Dhs.21; DhA.II,78.As equivalent of vitakka also at D.III,215; A.IV,385; Dhs.7.--kāma° a lustful thought A.III,259; V,31.paripuṇṇa° having one’s intentions fulfilled M.I,192; III,276; D.III,42; A.V,92,97 sq.; sara° memories & hopes M.I,453; S.IV,76; vyāpāda°,vihiṁsa°,malicious,cruel purposes,M.II,27 sq.; sammā° right thoughts or intentions,one of the aṅgas of the 8--fold Path (ariya-magga) Vin.I,10; D.II,312; A.III,140; VbhA.117.Saṅkappa is defd at DhsA.124 as (cetaso) abhiniropanā,i.e.application of the mind.See on term also Cpd.238.(Page 662)
saṅkhā
http://dictionary.sutta.org/browse/s/saṅkhā
saṅkhāPTS Pali-English dictionary The Pali Text Society's Pali-English dictionary
Saṅkhā,(f.) & Saṅkhyā (f.) [fr.saṁ+khyā] 1.enumeration,calculation,estimating ..