Hardness of rock (by using mohr's scale)
I believe you are referring to the organism's Phenotype,it's physical characteristics.
no
volcanoes
A eukaryotic cells' distinguishing organelle is a nucleus.
pilipino face
central planning
the feature used to add identifying information to a spreadsheet is a Header-Footer.
Idiosyncrasy, trait, characteristic.
trait, quality, attribute, distinguishing feature
A distinguishing feature of your families nature
is owned and operated by the people who use it.
Some woles have different kind of fur on them