idiograph

As nouns the difference between idiograph and autograph

is that idiograph is a mark or signature peculiar to an individual while autograph is a person’s own handwriting, especially the signature of a famous or admired person.

As an adjective autograph is

written in the author’s own handwriting.

As a verb autograph is

to sign, or write one’s name or signature on a book etc.

As nouns the difference between idiogram and idiograph

is that idiogram is karyogram while idiograph is a mark or signature peculiar to an individual.

As nouns the difference between ideograph and idiograph

is that ideograph is an ideogram while idiograph is a mark or signature peculiar to an individual.

As nouns the difference between idiography and idiograph

is that idiography is the study of individuals while idiograph is a mark or signature peculiar to an individual.

As nouns the difference between individual and idiograph

is that individual is a person considered alone, rather than as belonging to a group of people while idiograph is a mark or signature peculiar to an individual.

As an adjective individual

is relating to a single person or thing as opposed to more than one.

As nouns the difference between signature and idiograph

is that signature is a person’s name, written by that person, used to signify approval of accompanying material, such as a legal contract while idiograph is a mark or signature peculiar to an individual.

As an adjective signature

is distinctive, characteristic indicative of identity.

As nouns the difference between mark and idiograph

is that mark is sign while idiograph is a mark or signature peculiar to an individual.