noun, noun which may take the genitive case particle 'no'
softness; flexibility; elasticity
Used as a noun or adjectivally with の to describe materials, substances, or abstract qualities that are soft, pliable, or flexible. Often contrasts with 硬性 (こうせい, hardness).
This material has high flexibility and is easy to process.
Soft plastics are resistant to impact.
Compound of 軟 (なん, soft) and 性 (せい, nature, quality).