different between reductionism vs reductivism

English

reduction +? -ism

reductionism (countable and uncountable, plural reductionisms)

An approach to studying complex systems or ideas by reducing them to a set of simpler components.
(philosophy) A philosophical position which holds that a complex system is nothing but the sum of its parts, and that an account of it can be reduced to accounts of individual constituents. In a reductionist framework, the phenomena that can be explained completely in terms of relations between other more fundamental phenomena, are called "epiphenomena".

reductive +? -ism

reductivism (countable and uncountable, plural reductivisms)

Extreme simplification; reduction to a minimum; use of the fewest essentials
Synonym: minimalism
(philosophy of mind) The view that mental states can be reduced to physical phenomena.
(art) A minimalist movement in abstract painting and sculpture from the 1950s onwards.
(music) A minimalist school of music with similar aims.

(philosophical view of the mind as reducible):

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