Overlap vs. Overlay — What's the Difference?

Extend over so as to cover partly

To lay or spread over or on.

A part or amount which overlaps

To cover the surface of with a decorative layer or design

To lie or extend over and cover part of.

To embellish superficially

To have an area or range in common with.

(Printing) To put an overlay on.

To lie over and partly cover something.

To create (a new area code) having the same boundaries as another

To correspond in character or function

Past tense of overlie.

(Mathematics) To have one or more elements in common. Used of sets.

To lie over or on.

A part or portion that overlaps or is overlapped.

To suffocate (a baby, for example) by accidentally lying on top of it.

An instance of overlapping.

Something that is laid over or covers something else.

To extend over and partly cover something.

A layer of decoration, such as gold leaf or wood veneer, applied to a surface.

To have an area, range, character or function in common.

(Printing) A piece of paper used on a press tympan to vary the pressure that produces light and dark tones.

(mathematics) Of sets: to have some elements in common.

A transparent sheet containing graphic matter, such as labels or colored areas, placed on illustrative matter to be incorporated into it.

(genetics) To have some similar nucleotide sequences.

An area code whose boundaries are the same as another area code.

Something that overlaps or is overlapped

(transitive) To lay, spread, or apply something over or across; cover.

(rugby) a situation in the game where an attacking line has more players in it than the defensive line coming to meet it. The attacking side may exploit the overlap by using their superior numbers to break the opposition's defensive line. If attackers outnumber defenders by more than one player this is often termed a two man overlap or three man overlap, etc. If the attacking side fails to break through usually due to poor execution, they are said to waste an overlap.

To overwhelm; to press excessively upon.

The payment of a spouse's or other dependant's annuity benefits concurrently with the member's benefits, on death of the member during the guarantee period.

To lie over (someone, especially a child) in order to smother it; to suffocate.

To lay (one thing) over another; to lap.

To put an overlay on.

To cover part of.

To bet too much money on.

To be arranged so that a part of one object laying over part of another; as, the boards overlapped at their ends.

(printing) A piece of paper pasted upon the tympan sheet to improve the impression by making it stronger at a particular place.

To have the ending time of one period or process extend beyond the beginning time of another period or process; as, the lives of Theodore Roosevelt and Franklin Roosevelt overlapped by several decades.

(betting) Odds which are set higher than expected or warranted. Favorable odds.

The lapping of one thing over another; as, an overlap of six inches; an overlap of a slate on a roof.

(horse racing) A horse going off at higher odds than it appears to warrant, based on its past performances.

An extension of geological beds above and beyond others, as in a conformable series of beds, when the upper beds extend over a wider space than the lower, either in one or in all directions.

A decal attached to a computer keyboard to relabel the keys.

A representation of common ground between theories or phenomena;

(programming) A block of program code that is loaded over something previously loaded, so as to replace the functionality.

The property of partial coincidence in time

(internet) A pop-up covering an existing part of the display.

A flap that lies over another part;

(Scotland) A cravat.

Coincide partially or wholly;

A covering over something else.

Extend over and cover a part of;

To lay, or spread, something over or across; hence, to cover; to overwhelm; to press excessively upon.

To cover (an object made of an inexpensive metal, glass, or other material) with a thin sheet of an expensive metal, especially with silver or gold. Distinguished from to plate, which is done by a chemical or electrical deposition process.

To smother with a close covering, or by lying upon.

To put an overlay on.

A covering.

A piece of paper pasted upon the tympan sheet to improve the impression by making it stronger at a particular place.

A subroutine which occupies a portion of main memory which is occupied at some other time by another subroutine during execution of the same program. Overlays were used as an older technique to allow larger programs to be executed in restricted main memory space; the same effect is now accomplished by different techniques.

Protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior

Put something on top of something else;

Kill by lying on;