As LLPSI adds new vocabulary words to describe quantity, I am trying to put them on some kind of spectrum to get a better sense of how they differ. As best as I can puzzle out, the sequence is something like: nūllus, ūnus, nōnnūllī, complūrēs, aliquot, aliquantum, plērique, omnis. I realize there is probably some overlap, but does this sequence make sense? Is there a difference between aliquot and aliquantum?
You have to make sure in your comparison that you are comparing like with like. Some say aliquantus is some in quantity and aliquot is some in number.
Aliquot is indeclinable, an indefinite number. aliquantum is a) a declinable neuter noun or neuter adjective or b) an adverb.
Lewis gives
aliquantum (1) ī, n neut. of aliquantus, a little, some, a considerable amount, something
(2) adv., somewhat, in some degree, considerably, not a little:
and
aliquot some, several, a few, not many (undefined in number; while nonnulli indicates an indeterminate selection from several persons,…)
You can look the other words up here https://logeion.uchicago.edu
You can expect some overlap in the meaning of all these words. The meaning will depend largely on context, like most words.
Thank you!