Yes there are few. Therawada and mahayana are major
More than one thrombus (or the plural form) is "thrombi".
The possessive form is more than one month's.Example: I have more than one month's salary in my savings account.
Copper (Cu) does not form more than one type of cation.
2 forms.
Not known, but probably no.
The form of a noun when there is more than one of it.
When there is more than one source of illumination.
buddism
Lady's is a singular possessive noun; slipper is a singular noun. The plural form of lady is ladies; the plural possessive is ladies'. The plural form of slipper is slippers.Lady's slippers is the plural form of one lady possessing more than one slipper.Ladies' slippers is the plural form of more than one lady possessing more than one slipper.
Hydrogen can only form one covalent bond because it only has one electron.
Men is the plural form of the word "man". Plural means that there is more than one.
The plural of "this" is "these" (referring to more than one thing).