As a verb observed

is (observe).

As an adjective surveyable is

able to be surveyed or observed.

Unsurveyable is an antonym of surveyable.

As adjectives the difference between unsurveyable and surveyable

is that unsurveyable is unable to be surveyed while surveyable is able to be surveyed or observed.

Surveyable is a related term of survey.

As a noun survey

is the act of surveying; a general view, as from above.

As a verb survey

is to inspect, or take a view of; to view with attention, as from a high place; to overlook; as, to stand on a hill, and survey the surrounding country.

As an adjective surveyable is

able to be surveyed or observed.

As nouns the difference between photon and triphoton

is that photon is photon while triphoton is (physics) a composite particle created by overlapping three indistinguishable photons in an optical fibre and manipulating their spin.

As nouns the difference between spin and triphoton

is that spin is spin while triphoton is (physics) a composite particle created by overlapping three indistinguishable photons in an optical fibre and manipulating their spin.

As a verb substituted

is past tense of substitute.

As an adjective trisubstituted is

substituted with three (identical or different) substituents.

As a noun substituent

is any atom, group, or radical substituted for another, or entering a molecule in place of some other part which is removed.

As an adjective trisubstituted is

substituted with three (identical or different) substituents.

In management terms the difference between asqc and asq

is that asqc is acronym of American Society for Quality Control|lang=en while asq is American Society for Quality.

As a proper noun ASQC

is acronym of American Society for Quality Control|lang=en.

As an acronym ASQ is

American Society for Quality.

As an adjective american

is american.

As a noun american

is an american man.

As a proper noun asqc is

(management).

As nouns the difference between audit and auditee

is that audit is an audience; a hearing while auditee is one subjected to an audit.

As a verb audit

is to examine and adjust (e.g. an account).