fee vs fee tail

fee and fee tail both are nouns.

Word	Noun	Adjective	Verb	Adverb
fee	Yes	No	Yes	No
fee tail	Yes	No	No	No

As nouns, fee tail is a hyponym of fee; that is, fee tail is a word with a more specific, narrower meaning than fee:

fee: an interest in land capable of being inherited
fee tail: a fee limited to a particular line of heirs; they are not free to sell it or give it away

Other hyponyms of fee include fee simple.

fee (noun)	fee tail (noun)
a fixed charge for a privilege or for professional services	a fee limited to a particular line of heirs; they are not free to sell it or give it away
an interest in land capable of being inherited

fee (verb)	fee tail (verb)
give a tip or gratuity to in return for a service, beyond the compensation agreed on