# Metric vs. Index

## Difference Between Metric and Index

#### Metricadjective

of or relating to the metric system of measurement

#### Indexnoun

An alphabetical listing of items and their location.

*The index of a book lists words or expressions and the pages of the book upon which they are to be found.*

#### Metricadjective

(music) of or relating to the meter of a piece of music.

#### Indexnoun

The index finger; the forefinger.

#### Metricadjective

of or relating to distance

#### Indexnoun

A movable finger on a gauge, scale, etc.

#### Metricnoun

A measure for something; a means of deriving a quantitative measurement or approximation for otherwise qualitative phenomena (especially used in engineering)

*What metric should be used for performance evaluation?*

*What are the most important metrics to track for your business?*

*It's the most important single metric that quantifies the predictive performance.*

*How to measure marketing? Use these key metrics for measuring marketing effectiveness.*

*There is a lack of standard metrics.*

#### Indexnoun

(printing) A symbol resembling a pointing hand, used to direct particular attention to a note or paragraph.

#### Metricnoun

(mathematics) A measurement of the "distance" between two points in some metric space: it is a real-valued function d(x,y) between points x and y satisfying the following properties: (1) "non-negativity": $d(x,y)\; \backslash ge\; 0$, (2) "identity of indiscernibles": $d(x,y)\; =\; 0\; \backslash mbox\{\; iff\; \}\; x=y$, (2) "symmetry": $d(x,y)\; =\; d(y,x)$, and (3) "triangle inequality": $d(x,y)\; \backslash le\; d(x,z)\; +\; d(z,y)$.

#### Indexnoun

That which points out; that which shows, indicates, manifests, or discloses.

#### Metricnoun

(mathematics) a metric tensor

#### Indexnoun

A sign; an indication; a token.

#### Metricnoun

abbreviation of metric system

#### Indexnoun

(linguistics) A type of noun where the meaning of the form changes with respect to the context. E.g., 'Today's newspaper' is an indexical form since its referent will differ depending on the context. See also icon and symbol.

#### Metricverb

To measure or analyse statistical data concerning the quality or effectiveness of a process.

*We need to metric the status of software documentation.*

*We need to metric the verification of requirements.*

*We need to metric the system failures.*

*The project manager is metricking the closure of the action items.*

*Customer satisfaction was metricked by the marketing department.*

#### Indexnoun

(economics) A single number calculated from an array of prices or of quantities.

#### Metricnoun

a function of a topological space that gives, for any two points in the space, a value equal to the distance between them

#### Indexnoun

(science) A number representing a property or ratio, a coefficient.

#### Metricnoun

a decimal unit of measurement of the metric system (based on meters and kilograms and seconds);

*convert all the measurements to metric units*

*it is easier to work in metric*

#### Indexnoun

(mathematics) A raised suffix indicating a power.

#### Metricnoun

a system of related measures that facilitates the quantification of some particular characteristic

#### Indexnoun

An integer or other key indicating the location of data e.g. within an array, vector, database table, associative array, or hash table.

#### Metricadjective

based on the meter as a standard of measurement;

*the metric system*

*metrical equivalents*

#### Indexnoun

A data structure that improves the performance of operations on a table.

#### Metricadjective

the rhythmic arrangement of syllables

#### Indexnoun

(obsolete) A prologue indicating what follows.

#### Indexverb

(transitive) To arrange an index for something, especially a long text.

#### Indexverb

To inventory, to take stock.

#### Indexverb

To be indexical for (some situation or state of affairs); to indicate.

#### Indexnoun

a numerical scale used to compare variables with one another or with some reference number

#### Indexnoun

a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time

#### Indexnoun

a mathematical notation indicating the number of times a quantity is multiplied by itself

#### Indexnoun

an alphabetical listing of names and topics along with page numbers where they are discussed

#### Indexnoun

the finger next to the thumb

#### Indexverb

list in an index

#### Indexverb

provide with an index;

*index the book*

#### Indexverb

adjust through indexation;

*The government indexes wages and prices*