digraph

As a letter s

is the letter s with a.

As a noun digraph is

(graph theory) a directed graph or digraph can be (label) a two-character sequence used to enter a single conceptual character.

As nouns the difference between digraph and null

is that digraph is (graph theory) a directed graph or digraph can be (label) a two-character sequence used to enter a single conceptual character while null is zero, nil; the cardinal number before einn.

As a noun digraph

is (graph theory) a directed graph or digraph can be (label) a two-character sequence used to enter a single conceptual character.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between grapheme and digraph

is that grapheme is while digraph is (graph theory) a directed graph or digraph can be (label) a two-character sequence used to enter a single conceptual character.

As a verb ligatures

is .

As a noun digraph is

(graph theory) a directed graph or digraph can be (label) a two-character sequence used to enter a single conceptual character.

In graph theory terms the difference between graph and digraph

is that graph is an ordered pair $(V,E)$, where $V$ is a set of elements called vertices (or nodes) and $E$ is a set of pairs of elements of $V$, called edges; informally, a set of vertices together with a set edges that join these vertices while digraph is a directed graph.

As nouns the difference between graph and digraph

is that graph is a diagram displaying data; in particular one showing the relationship between two or more quantities, measurements or indicative numbers that may or may not have a specific mathematical formula relating them to each other while digraph is a directed graph.

As a verb graph

is to draw a graph.

In linguistics terms the difference between digraph and trigraph

is that digraph is a pair of letters, especially a pair representing a single phoneme while trigraph is a specific sequence of three letters, especially one used collectively to represent a single phoneme.

As nouns the difference between digraph and trigraph

is that digraph is a directed graph while trigraph is a specific sequence of three letters, especially one used collectively to represent a single phoneme.

In linguistics terms the difference between phonogram and digraph

is that phonogram is a group of letters which share the same letter combination associated with a sound, such as rhyming words while digraph is a pair of letters, especially a pair representing a single phoneme.

As nouns the difference between digraph and diagram

is that digraph is a directed graph while diagram is a plan, drawing, sketch or outline to show how something works, or show the relationships between the parts of a whole.

As a verb diagram is

to represent or indicate something using a diagram.

In linguistics terms the difference between digraph and bigram

is that digraph is a pair of letters, especially a pair representing a single phoneme while bigram is a pair, often of words or tags, used in analysis.

As nouns the difference between digraph and bigram

is that digraph is a directed graph while bigram is a pair, often of words or tags, used in analysis.