noun
decorativeness; decorative quality
Abstract noun referring to the degree or quality of being decorative, often used in design, art, or architectural contexts.
この家具は実用性よりも装飾性が重視されている。
This furniture emphasizes decorativeness over practicality.
建築の装飾性について議論する。
We discuss the decorative quality of the architecture.
実用性 means practicality or utility, often contrasted with 装飾性 in design discussions.
Compound of 装飾 (decoration) + 性 (-ness, quality). The derivation is transparent from its components.