The difference between expansion and ascent.
Aliyah (ascent above the intrinsic level) is distinct from hagdalah (growth within the intrinsic level). Different kinds of motion.
Op. 132 distinguishes aliyah from hagdalah. Both are upward motions, but they are structurally different. Klach's reader needs to know that not every cosmic ascent is the same kind of motion.
Hagdalah is growth within the intrinsic level. A Partzuf grows in operational power without exceeding its standing structural identity. Zeir Anpin (Z"A) growing through pregnancy, suckling, maturity is hagdalah — internal growth that produces the operational completeness of First Maturity.
Aliyah is ascent above the intrinsic level. A Partzuf operates higher than its standing structural identity allows in standard mode. Z"A's ascent on Shabbat (operating at Second Maturity) is aliyah — temporary operation above the standard intrinsic level.
The distinction matters because the cosmic government's operational vocabulary uses both kinds of motion. When Klach later treats Z"A's ascent after the Second Maturity (Op. 133), the reader needs to know it is aliyah — temporary, structurally limited, distinct from sustained hagdalah.
Op. 133 (Z"A's ascent after the Second Maturity). Op. 138 (the closing operational mechanism — operating with both kinds of motion as the cycle requires).