Indention
Part of speech: noun
Definition: The act of indenting a line of text by including blank space at the beginning
Indentation
Part of speech: noun
Definition: The act of indenting or state of being indented.A notch or recess, in the margin or border of anything; as, the indentations of a leaf, of the coast, etc.A recess or sharp depression in any surface.The act of beginning a line or series of lines at a little distance within the flush line of the column or page, as in the common way of beginning the first line of a paragraph.A measure of the distance from the flush line; as, an indentation of one em, or of two ems.