What's the plural form of husbandship? Here's the word you're looking for.
Answer
The noun husbandship can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be husbandship.
However, in more specific contexts, the plural form can also be husbandships e.g. in reference to various types of husbandships
or a collection of husbandships.