Beginner: My vocabulary might
be about 50 words. I also know a few phrases. However, I don't know how
to conjugate verbs or form sentences.
Survivor: I can form simple sentences. I can order a meal or get a room in a hotel. I am pretty much limited to the present tense.
Weaker speaker: I can handle basic conversation. However, I am pretty much limited to simple present, past and future. My vocabulary is fairly limited, but I can usually get my point across.
Stronger speaker: I know most of the grammar, but that doesn't mean that I can use it. I can speak better than I can understand.
Advanced: I feel pretty good about my Spanish. I have seen all the verb tenses, including the subjunctive. My vocabulary is good, and I get compliments on my Spanish, but I still have a ways to go.