As nouns the difference between ionization and deionisation

is that ionization is (chemistry|physics) any process that leads to the dissociation of a neutral atom or molecule into charged particles ions; the state of being ionized while deionisation is (chemistry).

In uncountable terms the difference between overhead and complexity

is that overhead is any cost or expenditure (monetary, time, effort or otherwise) incurred in a project or activity, which does not directly contribute to the progress or outcome of the project or activity while complexity is the state of being complex; intricacy; entanglement.

In countable terms the difference between overhead and complexity

is that overhead is a sheet of transparent material with an used with an overhead projector; an overhead transparency while complexity is that which is and renders complex; intricacy; complication.

As nouns the difference between overhead and complexity

is that overhead is the expense of a business not directly assigned to goods or services provided while complexity is the state of being complex; intricacy; entanglement.

As an adjective overhead

is located above, especially over the head.

As an adverb overhead

is above one's head; in the sky.

As an adjective steadfast

is fixed or unchanging; steady.

As a verb relenting is

.

As a noun relenting is

the act of one who relents.

As verbs the difference between blessed and saint

is that blessed is past tense of bless while saint is to canonize, to formally recognize someone as a saint.

As an adjective blessed

is having divine aid, or protection, or other blessing.

As a proper noun Blessed

is {{surname|lang=en}.

As a noun saint is

a person to whom a church or another religious group has officially attributed the title of "saint"; a holy or godly person; one eminent for piety and virtue.

As an adjective venerable

is used as a form of address for an archdeacon in the anglican church.

As a noun saint is

a title given to a saint, often prefixed to the person's name.

As nouns the difference between thanksgiving and appreciation

is that thanksgiving is an expression of gratitude while appreciation is a just valuation or estimate of merit, worth, weight, etc.; recognition of excellence.

As a proper noun Thanksgiving

is thanksgiving Day, celebrated on the second Monday of October in Canada, and on the fourth Thursday of November in the United States.

As nouns the difference between os and platform

is that os is an Ordnance Survey map while platform is a raised stage from which speeches are made and on which musical and other performances are made.

As an initialism OS

is ordnance Survey.

As a verb platform is

to furnish with or shape into a platform.

As a noun attachments

is .

As a verb attached is

(attach).

As an adjective attached is

in a romantic or sexual relationship.

In organic chemistry terms the difference between terpenoid and carotenoid

is that terpenoid is a very large class of naturally occurring and synthetic organic compounds formally derived from the hydrocarbon isoprene; they include many volatile compounds used in perfume and food flavours, turpentine, the steroids, the carotene pigments and rubber while carotenoid is of or relating to such a class of pigments.

As an adjective carotenoid is

of or relating to such a class of pigments.

As nouns the difference between intellectual and scholarship

is that intellectual is an intelligent, learned person, especially one who discourses about learned matters while scholarship is a grant-in-aid to a student.

As an adjective intellectual

is belonging to, or performed by, the intellect; mental or cognitive; as, intellectual powers, activities, etc.