chert

As nouns the difference between chert and chart

is that chert is massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral while chart is a map.

As a verb chart is

to draw a chart or map of.

As nouns the difference between chest and chert

is that chest is a box, now usually a large strong box with a secure convex lid while chert is massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral.

As a verb chest

is to hit with one's chest (front of one's body.

As nouns the difference between chert and limestone

is that chert is massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral while limestone is an abundant rock of marine and fresh-water sediments; primarily composed of calcite (CaCO₃); it occurs in a variety of forms, both crystalline and amorphous.

As an adjective limestone is

made of or with limestone.

As a noun chert

is massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral.

As an adjective cherty is

containing chert.

As nouns the difference between chert and basanite

is that chert is massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral while basanite is a basaltic extrusive rock, similar to chert.

As nouns the difference between chert and novaculite

is that chert is massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral while novaculite is a form of chert, very rich in quartz, that has been used to make whetstones.

As a noun chert

is massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral.

As an adjective conchoidal is

of or pertaining to a conchoid; that may be defined as a conchoid.

As nouns the difference between chert and jasperoid

is that chert is massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral while jasperoid is a rare dense siliceous rock similar in appearance to chert.

As an adjective jasperoid is

resembling jasper.