Senryu or Haiku? And what's Tanka?

After you read the link, you'll understand why I often think I should have named this blog "Sorta Kinda Senryu." But, as is obvious from reading my earlier writing, I didn't really know what Haiku were, let alone Senryu. And I'd heard of Tanka before, but never tried to write one. I've only written a couple. Here's one I wrote this morning.

Blackberry flowers, 
white & delicate in the sun; 
milk thistle purple 
fringe on the green, thorny stalk; 
nothing ripe yet.

https://akitahaiku.com/what-are-haiku-senryu-and-tanka/

Feeling guilty...

Feeling guilty,

she pulls up milk thistle 

by the root.

Two Senryu? Two Somethings.

Waking a cat --
a flurry of furry fear,
then the look of Death.

-----

My back hurts again.
The weeds in the garden
rejoice!

Spring afternoon

Spring afternoon,
the smell of purple flowers!
I don't know their name.

Two

Hating the gray rain-- 
But the little purple flowers! 
The grassy green hills!

---------

Cold rain beats the roof-- 
then yellow-breasted bird song 
and warm sun.

Wrote a few today!

At last, bright Sun!
Even among the trash cans,
your rays touch and warm.

----

The green of the hills
dotted with mostly black cows--
sunny break from rain.

----

Toes poke out of holes.
Grandma's crocheted orange blanket--
I sure miss her.

----

Berry cobbler
made with just cake mix and berries.
I miss my grandma.

----

My other grandma
would cheat at cards a little
and laugh a lot.

Written Yesterday

Gray-green tide rolls in,
white and gray seagulls hover,
searching for fish.