When you study new vocabulary, you need to make sure that you are aware of five things:
1) the spelling of the word
2) what part of speech it is
3) its pronounciation
4) its basic meanings (remember the polysemy that characterizes the English language!)
5) the ways it can used within the sentence
Concerning the first four aspects of a lexical item, visiting www.dictionary.com or consulting your glossary, dictionary or, of course, teacher would help a lot in consolidating new vocabulary.
What about the fifth aspect, though?
Since glossaries do not always offer example sentences, you can visit sentence.yourdictionary.com, type the word whose use confuses you and get a bunch of ideas about its place within complex or simpler sentences.
Advanced students who create vocabulary calendars every month, like Alice and the 'Literature Blog' writers (read more about this type of task), will surely find this site to be extremely useful!