To produce or design something that has not existed before. What word is this?
Invent
To become better than befrore; to make something/somebody better than before. What word is this?
Improve
Right or appropriate for a particular purpose or occasion. What word is this?
Suitable
What word is this?
App
Useful, easy or ưuick to do; not causing problems. What word is this?
Convenient
