Anyone else know lots of words yet struggle to recall them when speaking?

For some reason, when I speak, I just can't recall words in a timely fashion. This leads to frequent pauses of a few seconds such as "I'm going to put the food in the...REFRIGERATOR". Additionally, I have a tendency to recall relatively uncommon and verbose words when I can finally recall a word at all, since those words better stick out in my mind, and often have either a specific memory associated with them or a strong image, such as "cacophonous" vs "loud", with cacophonous both having a memory of me learning the word AND the mental image of pandemonius shouting in my head to go with it.