an (Greek #302)
a primary particle, denoting a supposition, wish, possibility or uncertainty
KJV usage: (what-, where-, wither-, who-)soever. Usually unexpressed except by the subjunctive or potential mood. Also contracted for 1437.
Pronounce: an
alla (Greek #235)
properly, other things, i.e. (adverbially) contrariwise (in many relations)
KJV usage: and, but (even), howbeit, indeed, nay, nevertheless, no, notwithstanding, save, therefore, yea, yet.
Pronounce: al-lah'
Origin: neuter plural of 243