פירוש על ערלה 2:10

תבלין שנים וג' שמות – three prohibited things are divided one from another, they are called three [different] types , such as peppers of Orlah/prohibited fruit of the first three years, or of a tree worshipped as an idol/Asherah or of a heave-offering/Terumah.

Introduction Our mishnah deals with seasonings and when they prohibit a dish into which they fell.

אסור ומצטרפין – meaning to say that they combine together to prohibit the cooked food that was seasoned by them.

Seasonings [consisting] of two or three categories of one species, or [consisting] of three species [of one category], are forbidden and combine. If two or three categories of one type of seasoning, for instance pepper from terumah, kilayim and orlah, fall into a dish, they combine to forbid the dish if they impart taste. The same is true if there are three different species, for instance, pepper, onion and garlic of one category such as terumah. If together they impart flavor, then the dish is prohibited.

או שני מינים משם אחד – such as an Arabic spice plant/ginger and pepper, and both are Orlah, or both are Terumah, but the Halakha is not according to Rabbi Shimon.

Rabbi Shimon said: Two or three categories of one species, or two species of one category, do not combine. Rabbi Shimon disagrees and says that different categories of one species and different species of one category do not combine.