The block of paper formed by the cut and stacked pages of a book, not including covers, boards, end papers, dust jacket or other accoutrements.

A thread counter or linen tester is a magnifying tool, where the lens is mounted at a fixed distance above the object being put under the tool. It was originally invented to check the quality of woven fabrics. But it also became a common tool in the printing industry.

The title page of a book (or other written work) is the page at or near the front which displays its title and usually additional information like author's/editor's name, the publisher and the place and date of publication.

Transitional typefaces appeared at the end the 17th century. They are still considered oldstyle designs, but already show characteristics (e.g. [almost] vertical stress, increased stroke contrast) of the Modern typefaces which follow during the 18th and 19th century.

A tympan is made from a soft material (such as parchment, leather, paper, rubber). It is used for letterpress printing and covers the the platen or printing cylinder while printing. It provides a necessary flexibility and can also be used to adjust the printing pressure. The tympan can be mounted permanently on the platen or printing cylinder or it mounted to a frame, which is then put between the platen and the forme while printing.

A type case is a compartmentalized (usually wooden) box used to store movable type used in letterpress printing.

A type founder is a person who is casting metallic printer's type.

An instrument for measuring type height.

In typography, type specimen refers to a any presentation of a certain typeface to showcase its design and/or use.

Type-high means: of a height equal to the distance from the foot to the face of a type.

A typeface is a set of of glyph designs that share common design features.

A typometer (also line gauge, compositor’s rule or type scale) is a ruler to measure typographic units. It can also have additional scales for other units such as millimeters.

An underline is a horizontal line immediately below a portion of writing.

One part of a bicameral script with less ascenders and descenders. 

An OpenType variable font is one in which the equivalent of multiple individual fonts can be compactly packaged within a single font file. This is done by defining variations within the font, which constitute a single- or multi-axis design space within which many font instances can be interpolated.

A decorative illustration on a block used in printing along with the text, e.g. at the beginning or end of a book or chapter of a book.

The distance between the baseline and the upper part of lowercase letters that don’t have ascenders.