There are two varieties of fairy tales.
There are two varieties of aerials: upright and inverted.
There are two varieties of ivy that were named for her.
There are two varieties of pepsinogen, known as pepsinogen I and pepsinogen II.
Emerald and aquamarine are two varieties of the same mineral, beryl, which is a crystalline mix of beryllium, aluminum, silicon and oxygen.
There are two varieties of collie: the rough-coated, originally used to guard and herd sheep, and the smooth-coated, used mainly to drive livestock to market.
There are two varieties of l, the common lateral l and a palatal variety, ll, as in Spanish, that sounds similar to the lli in million (as l + y).
Here are two varieties of lavender flowers; citrus trees, bearing sour oranges, lemons and calamondin; jasmine vines in bloom, winding up pillars; crepe-myrtle, safflower, rosemary and valerian arrayed in geometric beds.
At the bond end of the spectrum are two varieties of securities that differ only slightly.
There are two varieties of threshold deontology that are worth distinguishing.
