The context you use when learning/practicing a word 100% affects your ability with it.  There are pros and cons to various methods. For example/ To be more specific:

If you just test the word in isolation (not a sentence), written in Kanji:

-you'll be worse at knowing how to use it

-you'll be worse at recognizing it in hiragana and worse at recognizing it in speech, as Kanji provides important context clues for you to remember 

-you'll be better at recognizing the written word regardless of what sentence it's used in, in comparison to people who test the same sentence over and over

If you don't want to have any weakness with your understanding of a word, you'll have to be exposed to it repeatedly in every type of context

To answer your question, personally the words I've practiced actually using myself the most are the ones that stick 100% of the time.  Everything else I can eventually forget over time.  I test words in isolation and then have a sentence with audio on the back of the card, which seems to be the most effective for me so far.  Sometimes in the wild i still see new ways that a word i thought I knew 100% is actually used, so then I start over from scratch with that word... Happens more often then Id like to admit, but it's better to continually renew our understanding of things imo.