English UsageComparison guide

Carryover vs. Carry Over

“Carryover” is a noun for something retained or continuing from an earlier period. “Carry over” is a phrasal verb for moving, postponing, or allowing something to continue into a later time or situation.

Quick answer

Use “carryover” as a noun and “carry over” as a verb.

Key details

Confusion Familyword-boundary
Rule Familyorthographic-boundary
Termscarryover, carry over

Choose the right form

Decision table for Carryover vs. Carry Over
If you mean / needUseWhy
something retained or continuing from an earlier periodcarryoverIt is the noun.
to move, postpone, or continue something into another period or situationcarry overIt is the phrasal verb.

Further guidance

Context Boundary

In accounting and other specialist contexts, “carryover” can have narrower technical senses while keeping the same noun boundary.

Core difference

The closed form names the retained item or effect; the open form expresses the action or continuation.

Fast Test

Use “carry over” when the phrase can be conjugated: “carried over,” “carrying over.”

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. Carryover — Cambridge Dictionary (opens in a new tab)Cambridge University Press · Carryover as a noun
  2. Carry something over — Cambridge Dictionary (opens in a new tab)Cambridge University Press · Carry over as a phrasal verb

Related guides

English Usage

A Lot vs. Alot

Standard English writes “a lot” as two words for a large amount, number, frequency, or degree. “Alot” is a common misspelling in this sense; it should not be confused with the separate verb “allot.”

English Usage

Blackout vs. Black Out

“Blackout” is the closed noun, while “black out” is the two-word phrasal verb. The verb can describe losing consciousness or obscuring/darkening something; the noun names the resulting event or state.

English Usage

Blowout vs. Blow Out

“Blowout” is a closed noun for several events or results, and Cambridge also records “blow-out” as a noun variant. “Blow out” is the two-word phrasal verb, including the sense of extinguishing a flame.

English Usage

Breakout vs. Break Out

“Breakout” is a closed noun for an escape and an adjective in several established senses. Cambridge also documents “break-out” in modifier use. “Break out” is the two-word phrasal verb for meanings such as beginning suddenly or escaping.

English Usage

Breakthrough vs. Break Through

“Breakthrough” is a closed noun for an important discovery or advance and can also modify a following noun. “Break through” is the two-word phrasal verb for forcing or moving through a barrier or threshold.

English Usage

Build-up vs. Buildup vs. Build Up

“Build up” is the two-word phrasal verb. For the noun, Cambridge records hyphenated “build-up,” while its American dictionary also records closed “buildup.” The noun spelling therefore has a documented regional/style variant rather than one universal form.

Explore the topic