Underdetect is a related term of underdetection.

As a noun underdetection is

detection at excessively low levels, or at levels lower than are actually the case.

As a proper noun small

is .

As an adjective ultrasmall is

extremely or exceedingly small.

Infinitesimal is a synonym of ultrasmall.

As adjectives the difference between infinitesimal and ultrasmall

is that infinitesimal is infinitesimal while ultrasmall is extremely or exceedingly small.

Supersmall is a related term of ultrasmall.

As adjectives the difference between supersmall and ultrasmall

is that supersmall is very small; tiny while ultrasmall is extremely or exceedingly small.

As a noun corporation

is a group of individuals, created by law or under authority of law, having a continuous existence independent of the existences of its members, and powers and liabilities distinct from those of its members.

As an adjective anticorporate is

opposed to, or taking a negative view of, corporations and their activities.

As a noun vaccination

is inoculation with a vaccine, in order to protect from a particular disease or strain of disease.

As an adjective antivaccine is

opposed to vaccination.

As adjectives the difference between biological and biocompatible

is that biological is of or relating to biology while biocompatible is compatible with biological tissue.

As a noun claw

is a curved, pointed horny nail on each digit of the foot of a mammal, reptile, or bird.

As a verb claw

is to scratch or to tear at.

As an adjective clawlike is

resembling a claw.

As adjectives the difference between calm and floaty

is that calm is (of a person) peaceful, quiet, especially free from anger and anxiety while floaty is (of a dress) lightweight, so as to rise when the wearer is walking.

As nouns the difference between calm and floaty

is that calm is (in a person) the state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion while floaty is a lilo or similar item that floats on water and can be sat on.

As a verb calm

is to make calm.

Floaty is a synonym of billowy.

As adjectives the difference between billowy and floaty

is that billowy is of or pertaining to billows; swelling or swollen into large waves; full of billows or surges; resembling billows while floaty is lightweight, so as to rise when the wearer is walking.

As a noun floaty is

a lilo or similar item that floats on water and can be sat on.