A simple (trivial?) comparison of wines and what descriptive words from a set of wine reviews.
The darker the color means wines are more similar; I used 9 color scales (adding black for perfect matches) from http://colorbrewer2.org/.
Similarity is calculated by simply counting up the most frequent words used to describe the wines and seeing how many match in the top 10 for each.
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

albarino
chardonnay
chenin blanc
gewurztramin
greek white
gruner veltl
italian whit
marsanne
muscat
other white
pinot blanc
pinot grigio
portuguese w
rhone style 
riesling
rose
roussanne
sauvignon bl
semillon
sherry
spanish whit
sparkling
torrontes
viognier
white blend
albarino
8
chardonnay
7
chenin blanc
7
gewurztramin
7
greek white
9
gruner veltl
8
italian whit
9
marsanne
7
muscat
8
other white
8
pinot blanc
6
pinot grigio
6
portuguese w
10
rhone style 
3
riesling
7
rose
8
roussanne
7
sauvignon bl
6
semillon
7
sherry
8
spanish whit
9
sparkling
8
torrontes
9
viognier
7
white blend
6

Top matches for each wine, if had a score of 6/10 or higher

albarino

torrontes : 7
spanish_white : 7

chardonnay

chenin blanc

other_white : 6
sparkling : 6

gewurztraminer

greek white

other_white : 6
spanish_white : 6

gruner veltliner

italian white

marsanne

muscat

semillon : 6

other white

chenin_blanc : 6
greek_white : 6
sparkling : 6

pinot blanc

pinot grigio gris

portuguese white

rhone style white blend

riesling

sparkling : 7
semillon : 6

rose

roussanne

sauvignon blanc

semillon

muscat : 6
sparkling : 6
riesling : 6

sherry

spanish white

albarino : 7
torrontes : 7
greek_white : 6

sparkling

riesling : 7
chenin_blanc : 6
other_white : 6
semillon : 6

torrontes

albarino : 7
spanish_white : 7

viognier

white blend