DevonThink Pro has a concordance function that counts all the words in my research database, currently containing a little more than one thousand documents. This might seem like a trivial function, but it really is an interesting read. First there is a bunch of standard words:

Frequency   Word
---     ---
243220      the
111156      and
41456       for
38622       that
34588       The
25630       with
25591       are
18692       this
17210       from
15045       can
...

Interestingly enough, the first “useful” word that turns up is sound followed by music and time:

11490       sound
9839        music
9595        time
9179        musical

Then there are some system oriented words:

6276        data
6010        model
5649        system

A number of other relevant words follow, evenly spread between music, technology and gestures (which fits well with my research):

4951    Music
4909    performance
4509    control
4370    sounds
4358    analysis
4126    audio
4088    movement
4003    gestures
3944    video
3890    instrument
3787    motion
3546    object
3468    pitch
3336    gesture
3314    frequency
3157    human
3144    instruments
3140    body
3053    research
2966    structure
2908    hand
2806    process
2796    design
2793    visual
2782    physical
2695    computer
2666    signal
2607    Computer
2599    synthesis
2597    systems
2557    perception
2523    models
2500    features
2493    function
2433    interaction
2362    position
2324    movements
2193    University
2130    interface
2067    MPEG
2046    sequence
2042    expressive
1946    representation
1902    Musical
1888    speech
1887    method
1842    timbre
1811    mapping
1803    subjects
1786    performer
1749    auditory
1739    play
1712    algorithm
1702    environment
1693    development
1679    Sound
1627    temporal
1624    perceptual
1611    spectral
1576    processing
1552    acoustic
1498    action
1490    recognition

Postscript: You can tell when a PhD student is desperate trying to find all sorts of things to do other than writing that dissertation…